Any help would be great!! To start the engine is out of my 97 Cobra that has just been rebuilt with all forged internals and balanced. The heads are from an 04 Cobra with the 96-98 cams. I just had the heads redone at a machine shop. they put the heads completely together and said he clocked the cams to ford specs. The problem I am having is that now installed the timing chains are about 3 teeth off of the timing marks. Do I need to compress the slack adjusters and remove the rockers before installing the chains? or could the cams be clocked wrong? Thanks for any suggestions