front brake

Right, here's one that might have been asked a dozen times (but I couldn't find it) or it's something nobody has given any thought to. Could I be right that a Norton SLS brake with removable pivot point can be converted to 2LS by changing said pivot for a cam? As I've never seen it done before...

My master cylinder was re-sleeved 10 years ago by Fare Spares. Awhile back, the front brake began to drag, generating enough heat to damage the caliper. I ended up replacing the caliper, adding new SS pistons, and seals. It seemed to solve the problem, but shortly the front brake refused to...