Vintage British Motorcycles Repair/Restore

[@maaseyracer]

Those intake valve are SUNK IN! Those seats are toast.

[@daveco1270]

I'm a little worried I'll mess up the threads with the drill, but I may carefully try this method. I have to open up the primary on a new old bike I just picked up. It's got the stiffest clutch I've ever felt in my life so I wanna see what's going on, maybe put lighter springs in it. The previous owner said he put a racing clutch in it, but I don't know exactly what that entails.