Any tips on tightening the clutch fingers on a Parker 45 to cure a loose fitting cap? I understand that taking the cap apart is the best method but I don't know if mine is held in place with a rivet or a screw-in jewell. (I do have a jewell top.) I have tried bending the clutch fingers by sticking a screw driver in the cap but can't seem to reliably "catch" on the fingers. Any tips? Thanks in advance.