I've tried swapping plungers no difference (slightly different link). It just seems as if the coil is not holding the plunger long enough...
2nd issue - playfield insert lamps..Seem to be missing a few - globes are known to be good. I suspect a connector issue to to blame not not 100% sure as yet.
3rd issue - sound. Being an export model - no speech but sound 6 seems to get stuck in a loop. Both in game play and in test mode? NFI re this one!