Right. That's a good trick, too. But, SO FAR I haven't seen one where you have to expose any of the transfer slot on the secondary side. They are just too high up to do that. Heck, I had mine on my 450 adjusted square on all FOUR when I fired off my slant 6 to break in the cam. It popped right off.......at about 2700 RPM. lol I just left it there and it broke in fine. I readjusted it back later.