 		get: -> @_hitArea
 
 		set: (value) ->
-
 			@_hitArea = value
-
-			@knobOverlay.props =
-				width: @knobSize or 30 + @_hitArea
-				height:	@knobSize or 30 + @_hitArea
-
-			@sliderOverlay.props =
-				width: @width + @_hitArea
-				height:	@height + @_hitArea
+			@sliderOverlay.width = @width + @_hitArea
+			@sliderOverlay.height = @height + @_hitArea
 
 	@define "min",
 		get: -> @_min or 0

			width: 0, force2d: true
			name: "fill"

		@knobOverlay = new Layer
			backgroundColor: null
			name: "knobOverlay"

		@sliderOverlay = new Layer
			backgroundColor: null

		super options

		@knobSize = options.knobSize or 30
		@knob.parent = @fill.parent = @sliderOverlay.parent = @

		# Set fill initially
		if @width > @height
