I'm using a 10 oz dubro. I think it is the one called out in the plans. However I had to rotate it 90 degrees and remove some of the balsa frame near the top to get it to fit. Hope this does not cause feed problems. It is centered on the carb barrel.

I made a mistake on my covering sequence. I almost got started covering again and noticed my error. Bottom is one piece not two as I had posted. However instructions call out once piece to cover from fin to bottom/side corner. This is the piece I could not get all the wrinkles out and used a piece on the side and another from the side/top corner to the small 1/8 lip on the fin.