Cliff,
I am just now getting to installing the new secondary plastic cam you sent me. I tried to grind off the peened over ends of the screws holding the air valves on with a carbide burr in my dremel, but they appear to be hard steel & they just laughed at the carbide burr. Should I step up to a mini grinding wheel or do you have another double secret method that wont fill the airhorn with grinding bits? Thank you!
Greg