RE: Top Flite 1/7 P-51 Build
I didn't build with the retracts but it seems it would be hard to get the tubing thru the wing after sheeting. I guess you could lay some string or something similiar to help you pull the tubes. Or go ahead and put the tubing in (if you have some) then sheet the wing & get your retracts later. Better yet you could just put the wing aside and start the fuse construction. Send pictures and keep the thread going.
Brad