After new flipper bats are fitted, the right flipper touches the inlane wire guide even without a rubber, and shots lose so much power the ball won't make the loop.

After a flipper rebuild the right bat rubs the inlane wireform: wrong bat type fitted

Cause: The replacement bats were the Bally style, which mount differently from the classic Stern shoe-and-shaft bats this game uses, so the bat sits too close to the wireform.

Checks

• Compare the new bat and shaft with the original or with factory photos of the game; Bally and Stern bats of this era look alike but differ.
• Check whether the bushing and bracket were changed in the rebuild.

Fix

• Fit the correct classic Stern shoe-and-shaft flipper bat assembly for the game's era rather than bending the wireform.

Systems

• Stern MPU-100

Games

• Stars

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