a little bit of air in the tube.
start right beside the valve stem.
work your way around all the way in one direction to finish back at the valve stem.
when you get close to the stem, let some air out of the tube, push the stem inward as far as you can to keep the tube from pinching and finish the bead at the stem.
Last edited by bulldog1935; 12-08-16 at 09:32 PM.