diff --git a/CHANGELOG.md b/CHANGELOG.md
index eda4d3b..2231165 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ### Change Log for Node-RED Worldmap
 
- - v2.15.2 - Fix panit command to work, try to use alt units, popup alignments.
+ - v2.15.3 - Fix panit command to work, try to use alt units, popup alignments.
  - v2.15.0 - let speed be text and specify units if required (kt,kn,knots,mph,kmh,kph) default m/s.
  - v2.14.0 - Let geojson features be clickable if added as overlay.
  - v2.13.4 - Fix list of map choices to be in sync. Fix popup auto sizing.
diff --git a/README.md b/README.md
index 3d8d420..a3b894b 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ map web page for plotting "things" on.
 
 ### Updates
 
-- v2.15.2 - Fix panit command to work, try to use alt units, popup alignments.
+- v2.15.3 - Fix panit command to work, try to use alt units, popup alignments.
 - v2.15.0 - let speed be text and specify units if required (kt,kn,knots,mph,kmh,kph) default m/s.
 - v2.14.0 - Let geojson features be clickable if added as overlay.
 - v2.13.4 - Fix list of map choices to be in sync. Fix popup auto sizing.
diff --git a/package.json b/package.json
index e689ad1..4e58fd2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "node-red-contrib-web-worldmap",
-    "version": "2.15.2",
+    "version": "2.15.3",
     "description": "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies": {
         "cgi": "0.3.1",
diff --git a/worldmap/worldmap.js b/worldmap/worldmap.js
index e8ef3d0..f7f272d 100644
--- a/worldmap/worldmap.js
+++ b/worldmap/worldmap.js
@@ -318,10 +318,10 @@ else {
     rulerButton.addTo(map);
 
     // Create the clear heatmap button
-    var clrHeat = L.easyButton( '<b>Reset Heatmap</b>', function() {
+    var clrHeat = L.easyButton( 'fa-eraser', function() {
         console.log("Reset heatmap");
         heat.setLatLngs([]);
-    }, "Clears the current heatmap", "bottomright");
+    }, "Clears the current heatmap", {position:"bottomright"});
 }
 
 var helpMenu = '<table>'
@@ -1684,12 +1684,12 @@ function setMarker(data) {
         myMarker = new ms.Symbol( data.SIDC.toUpperCase(), { uniqueDesignation:data.name });
         // Now that we have a symbol we can ask for the echelon and set the symbol size
         var opts = data.options || {};
-        var sz = 30;
+        var sz = 25;
         if (myMarker.hasOwnProperty("getProperties") && myMarker.getProperties().hasOwnProperty("echelon")) {
             sz = iconSz[myMarker.getProperties().echelon];
         }
         opts.size = opts.size || sz;
-        opts.size = opts.size * 0.8 * (opts.scale || 1);
+        opts.size = opts.size * (opts.scale || 1);
         myMarker = myMarker.setOptions(opts);
         var myicon = L.icon({
             iconUrl: myMarker.toDataURL(),
@@ -1855,6 +1855,7 @@ function setMarker(data) {
     if (data.dashArray) { delete data.dashArray; }
     if (data.fill) { delete data.fill; }
     if (data.draggable) { delete data.draggable; }
+    if (!isNaN(data.speed)) { data.speed = data.speed.toFixed(2); }
     if (data.hasOwnProperty("clickable")) { delete data.clickable; }
     if (data.hasOwnProperty("fillColor")) { delete data.fillColor; }
     if (data.hasOwnProperty("radius")) { delete data.radius; }