diff --git a/programs/prizewheel.lua b/programs/prizewheel.lua
index 972f568..11cd57f 100644
--- a/programs/prizewheel.lua
+++ b/programs/prizewheel.lua
@@ -273,7 +273,7 @@ local function drawStand()
     for i = 0, steps do
         local frac = i / math.max(1, steps)
         local cx_l = lx1 + math.floor((lx2 - lx1) * frac)
-        px_rect(cx_l - legW//2, baseY + i, legW, 1, COL_STAND)
+        px_rect(cx_l - math.floor(legW/2), baseY + i, legW, 1, COL_STAND)
     end
     -- Right leg
     local rx1 = CX + math.floor(RX * 0.3)
@@ -281,11 +281,11 @@ local function drawStand()
     for i = 0, steps do
         local frac = i / math.max(1, steps)
         local cx_r = rx1 + math.floor((rx2 - rx1) * frac)
-        px_rect(cx_r - legW//2, baseY + i, legW, 1, COL_STAND)
+        px_rect(cx_r - math.floor(legW/2), baseY + i, legW, 1, COL_STAND)
     end
     -- Horizontal crossbar
     local barY = baseY + math.floor(steps * 0.55)
-    px_rect(lx2 - legW//2, barY, rx2 - lx2 + legW, 6, COL_STAND_DRK)
+    px_rect(lx2 - math.floor(legW/2), barY, rx2 - lx2 + legW, 6, COL_STAND_DRK)
 end
 
 -- Fixed pointer triangle at the top of the wheel (screen top, pointing down)
diff --git a/programs/roulette.lua b/programs/roulette.lua
index 7446a52..c8788a4 100644
--- a/programs/roulette.lua
+++ b/programs/roulette.lua
@@ -86,8 +86,8 @@ local BOWL_SLOPE         = math.pi / 9   -- 20 degrees
 -- Pocket well is deeper — steeper slope
 local POCKET_SLOPE       = math.pi / 5   -- 36 degrees
 -- Restitution on bowl surface normal bounce
-local RESTITUTION_WALL   = 0.55
-local RESTITUTION_POCKET = 0.38
+local RESTITUTION_WALL   = 0.82
+local RESTITUTION_POCKET = 0.68
 -- Rolling friction: velocity multiplier per second on the bowl surface
 local FRICTION_ROLL      = 0.988   -- per frame on track
 local FRICTION_POCKET    = 0.970   -- per frame in pocket
@@ -252,7 +252,9 @@ local function bgAt(bx, by)
 end
 
 local function eraseBall()
-    px_circle(ballX, ballY, BALL_RADIUS + 2, bgAt(ballX, ballY))
+    -- Shadow is drawn at +2,+2 with full BALL_RADIUS, so the total footprint
+    -- extends BALL_RADIUS+2 from centre in x/y.  Add 3px margin to be safe.
+    px_circle(ballX, ballY, BALL_RADIUS + 5, bgAt(ballX, ballY))
 end
 
 local function drawBall(bx, by)