Turns out the solenoid had just died. The bendix was extending, but not spinning. bypassed the fire-wall mounted solenoid to use the gear-reduction starter solenoid and it's working great.
Last edited by Read T; 05/12/1407:59 PM.
1960 Morgan +4 4 seater 1997 Nissan 240sx S14 2011 Nissan 370Z 2009 Triumph Street Triple