been there, done that. ya the shrouds are a bitch, but i got them on. the only thing i found that helped the seat slide forward was to put a .125" spacer under the stud for the front seat tab. also, the cylindrical spacer they supply is too large in diameter and i had to grind the slot in the seat out so tha it would slide up on the spacer. after these mods and pure brute strength, i could just barely get the seat bolts started. I WAS VERY DISAPPOINTED WITH THE IMS TANK. pis poor! i've recently heard that the Clarke tanks are the way to go.