I had just gotten the clam off in order to pull the head and was starting by removing the serpentine belt. Couldn't figure out where to lever on the tensioner to loosen the belt until staring at it for a while and noticing a chunk missing. Well, I was able to remove the belt with an adjustable wrench on a web of the tensioner but I still want to replace it. I can't get the big bolt all the way out, it touches the frame. Suggestions?