Quoted from PatD:The kickback on my High Speed is weak. Read some threads and seems I should start with a new tip. Looked at my kickback and I can't tell what's on the end of it - looks destroyed. Is this supposed to be a grommet? Is this the right one? https://www.marcospecialties.com/pinball-parts/38-6420 I assumed I was looking for a rubber tip, but maybe not.[quoted image]
Check switch timing suspect the plunger is energizing too early check the ball as it drains to see what point the plunger fires.
Check for drag on the plunger with apron off,
The tip could be cleaned up so contact is made at the center of ball/or replaced