The right flipper is weak (cannot make the Bear Kick ramp) even after a new coil, rebuild kit, coil stop, bushing, sleeve, bat and swapped flipper boards.

Weak right flipper that survives a full rebuild: check for a bent base plate

Cause: The flipper mechanism base plate is very slightly bent, so the bat shaft rubs in its bushing and loses power. A coil stop whose flange is bent past 90 degrees can cause the same weak or sticky behaviour.

Checks

• Swap the two flipper coils side to side, leaving the wires on their original lugs. If the weakness stays with the mechanism rather than following the coil, the problem is mechanical.
• Remove the weak flipper assembly and check the base plate on a flat surface for any bow or twist.
• Check that the coil stop flange is square to the plate.

Fix

• Flatten the base plate (or replace it) and reassemble the mechanism with the bat moving freely in the bushing.
• Replace a coil stop whose flange is out of square.

Systems

• WPC Fliptronics

Games

• The Addams Family

Related tips

• WPC flipper coils from weakest to strongest
• Flipper coil strength order (WPC flipper coil strengths file)
• Upper right flipper chatters, follows the Fliptronic board: wrong U2 and a bad D2
• Games that came with Type 1 flipper opto boards
• Fliptronics I appears only in The Addams Family
• Coil sleeves and flipper rebuild spares
• Flipper rebuild step 1: remove and check the coil stop
• Flipper rebuild steps 8-9: correct coil, new sleeve, reassemble

Source: Pinball Repair help group!! (Facebook group)