I have moulded this fuel cover but struggling to make the part without bridging around the edge. This is prepreg.

I'm laying 1 xpreg surface ply and 1 backing ply. Laying it in one full piece. And tried debulk for 30mins to.

Should I have made the mould of filleting wax a bit deeper? Or should I be laying a circle of carbon and then go around the edge. But as this is a cover I figured I couldn't do that and overlap the carbon joins making it to thick. 

Thanks