Tom thanks will give it a try this weekend. As we understand it you point it at the timing arrow pointer and make sure the degree wheel is on zero and that the BB on the fly-wheel is at TDC and is lined up with the arrow pointer. When those two line up then move the dial to the degree number you want(which changes the strobe pulse) then rotate the dizzy until the two marks line up again and that gives you your degree numbers...agree? T/C Steve
