diff --git a/code/map_data.js b/code/map_data.js
index b2a60a47..1216dae0 100644
--- a/code/map_data.js
+++ b/code/map_data.js
@@ -216,12 +216,12 @@ window.requestData = function() {
       return 0;
     });
 
-    data = { zoom: z };
+    data = { };
     data.boundsParamsList = tls;
     // keep a list of tile_ids with each request. in the case of a server error, we can try and use cached tiles if available
     var tile_ids = []
     $.each(tls,function(i,req) { tile_ids.push(req.qk); });
-    window.requests.add(window.postAjax('getThinnedEntitiesV3', data, function(data, textStatus, jqXHR) { window.handleDataResponse(data,false,tile_ids); }, function() { window.handleFailedRequest(tile_ids); }));
+    window.requests.add(window.postAjax('getThinnedEntitiesV4', data, function(data, textStatus, jqXHR) { window.handleDataResponse(data,false,tile_ids); }, function() { window.handleFailedRequest(tile_ids); }));
   });
 
   // process the requests from the cache
@@ -255,7 +255,7 @@ window.handleFailedRequest = function(tile_ids) {
     handleDataResponse(cachedData, true);
   }
 
-  if(requests.isLastRequest('getThinnedEntitiesV3')) {
+  if(requests.isLastRequest('getThinnedEntitiesV4')) {
     var leftOverPortals = portalRenderLimit.mergeLowLevelPortals(null);
     handlePortalsRender(leftOverPortals);
   }
diff --git a/code/map_data_calc_tools.js b/code/map_data_calc_tools.js
index 33e444cb..8f845c5e 100644
--- a/code/map_data_calc_tools.js
+++ b/code/map_data_calc_tools.js
@@ -10,20 +10,20 @@
 // http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
 
 window.lngToTile = function(lng, zoom) {
-  return Math.floor((lng + 180) / 360 * Math.pow(2, zoom));
+  return Math.floor((lng + 180) / 360 * Math.pow(2, (zoom>12)?zoom:(zoom+2)));
 }
 
 window.latToTile = function(lat, zoom) {
   return Math.floor((1 - Math.log(Math.tan(lat * Math.PI / 180) +
-    1 / Math.cos(lat * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, zoom));
+    1 / Math.cos(lat * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, (zoom>12)?zoom:(zoom+2)));
 }
 
 window.tileToLng = function(x, zoom) {
-  return x / Math.pow(2, zoom) * 360 - 180;
+  return x / Math.pow(2, (zoom>12)?zoom:(zoom+2)) * 360 - 180;
 }
 
 window.tileToLat = function(y, zoom) {
-  var n = Math.PI - 2 * Math.PI * y / Math.pow(2, zoom);
+  var n = Math.PI - 2 * Math.PI * y / Math.pow(2,  (zoom>12)?zoom:(zoom+2));
   return 180 / Math.PI * Math.atan(0.5 * (Math.exp(n) - Math.exp(-n)));
 }
 
diff --git a/code/portal_render_limit.js b/code/portal_render_limit.js
index 299f28cf..cd1f4cb5 100644
--- a/code/portal_render_limit.js
+++ b/code/portal_render_limit.js
@@ -98,7 +98,7 @@ window.portalRenderLimit.splitOrMergeLowLevelPortals = function(originPortals) {
   portalRenderLimit.resetCounting();
   portalRenderLimit.countingPortals(originPortals);
 
-  var resultPortals = requests.isLastRequest('getThinnedEntitiesV3')
+  var resultPortals = requests.isLastRequest('getThinnedEntitiesV4')
     ? portalRenderLimit.mergeLowLevelPortals(originPortals)
     : portalRenderLimit.splitLowLevelPortals(originPortals);
 
diff --git a/plugins/ap-list.user.js b/plugins/ap-list.user.js
index a3b44411..c10fe9fb 100644
--- a/plugins/ap-list.user.js
+++ b/plugins/ap-list.user.js
@@ -2,7 +2,7 @@
 // @id             iitc-plugin-ap-list@xelio
 // @name           IITC plugin: AP List
 // @category       Info
-// @version        0.5.4.@@DATETIMEVERSION@@
+// @version        0.5.5.@@DATETIMEVERSION@@
 // @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
 // @updateURL      @@UPDATEURL@@
 // @downloadURL    @@DOWNLOADURL@@
@@ -54,7 +54,7 @@ window.plugin.apList.animTimeout;
 
 // ENTRY POINT ///////////////////////////////////////////////////////////////////
 window.plugin.apList.handleUpdate = function() {
-  if(!requests.isLastRequest('getThinnedEntitiesV3')) return;
+  if(!requests.isLastRequest('getThinnedEntitiesV4')) return;
   plugin.apList.updateSortedPortals();
   plugin.apList.updatePortalTable(plugin.apList.displaySide);
 }
diff --git a/plugins/show-linked-portals.user.js b/plugins/show-linked-portals.user.js
index a69f7a90..75ef6ba8 100644
--- a/plugins/show-linked-portals.user.js
+++ b/plugins/show-linked-portals.user.js
@@ -2,7 +2,7 @@
 // @id             iitc-plugin-show-linked-portals@fstopienski
 // @name           IITC plugin: Show linked portals
 // @category       Portal Info
-// @version        0.0.6.@@DATETIMEVERSION@@
+// @version        0.0.7.@@DATETIMEVERSION@@
 // @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
 // @updateURL      @@UPDATEURL@@
 // @downloadURL    @@DOWNLOADURL@@
@@ -29,7 +29,7 @@ window.plugin.showLinkedPortal = function () {
 };
 
 window.plugin.showLinkedPortal.handleUpdate = function () {
-    if (!requests.isLastRequest('getThinnedEntitiesV3')) {
+    if (!requests.isLastRequest('getThinnedEntitiesV4')) {
         return;
     }
 }