Ok, so i advanced the distributer to 12 degrees and it still started so i went to advance it a little more and the distributer would not advance any further then 12 degrees, whats going on here? the distributer is not hitting anything ether? i dont get it? is it possible my old man put it in there to where it could not be advanced any further then 12 degrees? do i need to pull it out and put it back in at a different position?