Circle at six o'clock

[DataZombies]

Thanks for this tool. I'm not good with PhotoShop so you saved me countless hours of frustration. I am generating a single arc with data-bgColor="rgba(127,127,127,.25)". I modified the single arc code as suggested in issue 5, but have an problem. There's a circle at the six o'clock position. It looks like there are two half background arcs and that they are overlapping.

The complete single arc code is...

<input id="single-single-arc" class="knob with-subtext" data-min="0" data-max="100" 
value="75" data-bgColor="rgba(127,127,127,.25)" data-fgColor="#7F7F7F" 
data-fgColorMid="#7F7F7F" data-fgColorEnd="#7F7F7F" data-displayInput=true 
data-width="300" data-height="300" data-thickness=".2" data-bgthickness=".2" 
data-angleOffset=0 data-linecap=round data-readOnly=true data-inputColor="#ffffff" 
data-shadow=true data-shadowColor="#555555">

Do you have any suggestions ofter than editing images 1 - 50 in PS? Maybe make the background edges flat by default?