tottot I agree this would help , however the bolt on the long thread has been loosened and tub is too heavy to lift in one corner , the only way round this I think is to split a washer and work it around the bolt as , there is a bracket wher door meets tub on hinge side and that is very difficult to get to , Ill have another look later , at moment im redrilling holes for seatbelt bracket because they were way out. , all other holes between roof and sides lined up perfectly