My radiator is leaking badly for the second time now (the first time I used JB Weld to plug the hole). What does a radiator generally cost? Is it worth it to go with an aftermarket or is a stock replacement good? Also I think the leak is being caused by the radiator vibrating and hitting the frame, there is only one bolt holding it on on the bottom of the radiator and it has a lot of play in it, has anyone else had this problem and know of a fix?