Ok so i was removing the exhaust off a xs400 special i bought to put new gaskets in and check it out. While i was unscrewing the nut on the exhaust stud it broke off....so now i need to find a replacement stud bolt i can put in. Anyone know where to find replacement parts like this? ive looked but cant find any. thanks for the help. ooh one more thing need to change the oil. any suggestions on what kind and where the oil bolt is on this thing?