ORIGINAL: skylarkmk1
Bill,
Hadn't thought about the roof flashing, thanks for that idea. Do you happen to have a photo of the kit tank piece? I have a picture of the bottom of the fuel tank on a enclosed rear cockpit WACO (not sure of the model) that shows ribs on the bottom of the tank. I got the photo from Aircraft Photo Database Search
http://www.russellw.com/photoalbum/photo_query_form.asp . It has many close up photos of different WACOs, but just a few of the YMF.