I have begun to cut out the opening/door. But I'm not sure exactly how to cut around. I'm going to have to cogitate on this a bit.
Looking forward to another couple hours in the Super Decathlon tomorrow. Slowly getting up to speed in tail-draggers again after 35 years away from them. Hope to have some pics of the Super D and some text on the travails of learning to wheel land that Super D so I can get my sign-off.