SRM, Brightspark etc.
Are you 100 % sure the mag slipring, pick-up eath brush etc. is 100%
I just rebuild my mag. with new bearings isolator ring gasket and main gasket.
Shim packet and bearings from Bright spark..
If your condenser i dead, fit a modern brightspark item..
I found the pick up brushes sticking in the pick ups housing..
and end play of bearings was wat out of max.