You stick a paperclip (straightened of course) in the hole and it will loosen the knob....it has been a while, don't remember the details, but just play with it and you'll see it will come off. SgtDel
aka "Andy"
www.delbridge.net
1979 Big 10 383 stroker
1991 Blu 'Burb 3/4 ton 4x4