I purchased a set of competition engineering sub frame connectors. Started the assembly process, it says to remove the very end frame to body bolt. Got that out. Then it says to remove the three bolts in the rear where the leaf spring mount attaches to the body. I was able to get 2 of the 3 bolts out. the last one just continues to spin and will not come out. I drove a screwdriver between the mount and body and pryed down on it while loosening the bolt with a ratchet. It didn't work. Only other option I see is cutting the head of the bolt off with a zizz wheel. Then how do I get the rest of the bolt out? It's a blind hole, I see no access from above. I even looked inside under the back seat and nothing. Any ideas?