After you do what the two gentlemen before me suggest, keep an one on it, you may require a speedo rebuild soon. The way you describe your issue is exactly how mine behaved before it finally stopped working and I had a rebuild done.
SWEET Sergeant At Arms: Old Dominion Stovebolt Society BUNS?!?!?!Where we're going, we don't need no buns..... 1950 GMC 450 1951 Chevy 1/2-Ton The GreenMachine In the Stovebolt Gallery
