Just fitting rocky mountain para and dampers as part of a major rebuild. How do i get the two rear bolts out that go thro the front rear of the spring? Nuts came off easy on the inside of the chassis but bolts v.tight. Can turn them with a breaker bar but not sure what to do. Grind/saw bolt heads off and put nut on to pull bolt through inside of chassis? Or make a threaded pusher to push bolts thro from inside? Will be renewing all bolts, links and bushes. Help please. Tried heat - no good