diff --git a/README.md b/README.md
index e3bb7798..fa3251c5 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,8 @@
 
 This repo contains the editor target hosted at https://d541eec2-1e96-4b7b-a223-da9d01d0337a.pxt.io/
 
-Issue tracker: https://src.education.lego.com/groups/ev3-makecode
+LEGO Auth: https://src.education.lego.com/groups/ev3-makecode (use Google Authenticator)
+LEGO Chat: https://chat.internal.education.lego.com/make-code/channels/town-square 
 
 ## Local Dev setup
 
diff --git a/libs/core/screen.ts b/libs/core/screen.ts
index 61f6690e..b87d3156 100644
--- a/libs/core/screen.ts
+++ b/libs/core/screen.ts
@@ -58,7 +58,7 @@ namespace brick {
         }
     }
 
-    export function setPixel(on: boolean, x: number, y: number) {
+    function setPixel(on: boolean, x: number, y: number) {
         x |= 0
         y |= 0
         if (0 <= x && x < DAL.LCD_WIDTH && 0 <= y && y < DAL.LCD_HEIGHT)
@@ -101,6 +101,7 @@ namespace brick {
     //% weight=96 group="Screen" inlineInputMode="inline" blockGap=8
     //% line.min=1 line.max=10
     export function showValue(name: string, value: number, line: number) {
+        value = Math.round(value * 1000) / 1000;
         showString((name ? name + ": " : "") + value, line);        
     }
 
@@ -140,12 +141,9 @@ namespace brick {
      */
     //% blockId=screen_show_image block="show image %image=screen_image_picker"
     //% weight=100 group="Screen" blockGap=8
-    export function showImage(image: Image, delay: number = 400) {
+    export function showImage(image: Image) {
         if (!image) return;
         image.draw(0, 0, Draw.Normal);
-        delay = Math.max(0, delay);
-        if (delay > 0)
-            loops.pause(delay);
     }
 
     /**
@@ -170,7 +168,7 @@ namespace brick {
         screen.clear();
     }
 
-    export function drawRect(x: number, y: number, w: number, h: number, mode = Draw.Normal) {
+    function drawRect(x: number, y: number, w: number, h: number, mode = Draw.Normal) {
         x |= 0;
         y |= 0;
         w |= 0;