usually cause by ham fisted mechanics using 1/2 inch drive ger when 1/4-3/8th would have done and not doing the job properly by means of filing to clean threads properly or relying on one bolt to pull the whole thing down before starting the next bolt.
look up helicoils you wont have room to swing the tap handle properly but a 1/4 inch (or 3/8th depending on which kit you get)4-6(might be 8 its been a while) inch extension used in reverse with the appropriate swivel will get you clearance enough, just be careful when starting the tap.
Bookmarks