of course on my last tail feather I had an uh oh. I had to cut a slit for the rudder horn to do through the fabric but when I shrunk the fabric the slit ripped some more and opened up. I put a patch on it, and it is in an area where there will be another reinforcement patch and a tape. but it is also on the top of the elevator (of course) trying to decide if i want to leave it be or remove the fabric and try again. I think i have enough fabric for a redo if i need to.