> My KC knob has a broken shaft tab, just 3 rather than > 4, and a bit of occassional slippage. My Blue Striper's big knobs had similar problems. My solution: 1. Drill out the knob body (be careful you don't go through the front!) 2. Use JB Weld to glue in a new slotted stainless tube. 3. Reattach knob. Tim.