Mr. Matthew Gray:
Good morning!
Matt, as with any plane they have their own unique set of problems. I've been giving a guy a hand here rebuilding J-3, L-4, and a Tri-Pacer. The one thing I've noticed is everyone of them needed major tube-frame repair prior to recovering the aircraft which becomes clearly visible in a complete overhaul. Now that's not saying they are unlike aircraft like my C-150 which had its own set of problems during the restoration.
Just my thoughts.
Have a grat day, Herb Rose, N5793E; KZER