grcamna - thanks for the info, I will see if I can get those petcock seals from my dealer. Hall & Jerry - those 350's were popular when I was in high school too. However, I could only afford a new 175 when I was a senior. I figure now is my chance. And as fate would have it, this 1972 is the same year I graduated high school. The seat is really nice, but I can see a OEM seat in the future. The OEM seat cover looks like my K1, but the hinge is on the opposite side and the lock is different. That is to bad as I have a real nice spare K1 seat in my parts bin.