My second question is related to the cylinder heads. I have the shop manual and was planning on removing the camshafts but have found what I think is a broken or partially broken lower guide. I was able to turn the engine to TDC (only had to move it an 1/8 of a turn but am afraid to move it anymore. With that said, how easy is it to remove the heads with the cams in place? Is it possible to remove the cams (specifically the lifters) without turning over the engine?

If that is possible, is there a bolt near the fire wall in each cam tower also holding the head in place? I'm looking at the manual and I can identify all the bolts needed to remove the heads except one near the fire wall on each head - can't see anything else but a cam tower bolt in that location.