Thanks MDM54,You're right about the home sewing machine not taking #69 thread(i tried),that pucker is probably about 1",I was a little apprehensive splitting it but it makes sense to split in several places along the back up to the seem,at the time it just seemed that corner would be less noticeable.I have less than $100 in that liner with probably enough VCP to do another one.I'm looking at an old Kenmore heavy duty sewing machine,so I won't do that one over again but I may make another one and this time I'll sew the screens ,clear and covers in first then cut the windows.I think this one will have to do for now.It's not that hard to take the liner off if I do it the way FWC originally did and not tuck it under the roof.This whole things been a real learning experience.These campers are a really simple design and it shouldn't be "rocket science"making things fit together but at times I feel like it is..