You can try www.garagemotorsports.com, talk to Mike, knowledgeable guy. Helped me out with my 3 sp.w/OD, ended buying a rebuilt unit from them. Not cheap, but it works perfectly.
I tried moving the energizing springs a notch too, but it didn't work for me. Good luck

'59 Apache
‘21 Beta 390RS
‘18 BMW R1200RT
'12 Ford Flex
'13 Aprilia Tuono
‘11 Ducati Hypermotard
Salisbury, MD