Engine gremlin?
Bo:
Just in case Bill doesn't get back to you in time. His idea is a good one. Cut a piece of tubing about 1/4" long to create an outside
o-ring to seal air from sucking in around the stem. One problem
you'll have is that it will be harder to feel if you fully bottom out
stem to start setting the 1 1/2 turns out. But it should start if you are at least close.
Good luck.
Randy