I had one cam from MP that was 26* off... the key way
was ground off... I set that at the so called dot to
dot to get a base then degree it... but the valves
crashed on the first turn.... I changed to setting
the crank at the 108* and set the intake lobe at top
then checked all the lobes once I had it at the proper
108... then I advanced it 4*.... that box the cam
came in was already open so I think someone bought
it and gave it back... other than the key way being
off the cam was fine... it was a roller cam