We bought a new 05 22V in 06. Been a good boat, was my third boat. After 20 years some of the upholstery needs to be replaced. Got the bottom seats and that crazy curved piece out, but I can't figure out how they attached the seat backs! I could see the three bolts holding the big back piece, easy access from the storage and engine compartments, but I see or feel NOTHING for the corners and side seat backs. I can't find anyone to ask at at Tige either. Hopefully someone here has knowledge or how to contact someone who knows.