The motors(440) been together for four yrs. now .i started it up and went for a ride when i got home i shut it down and when i re-started it ,it started and stalled . to make a short story endless i ended up moving the dist. about 90* to get it to start back up,it ran like *#%# . I checked TDC with the piston and balancer it looked good .also checked the dist. drive gear the keyway looked good so did the angle of the slot . any thoughts would be appriciated .