From new, the playfield glass is so tight in its channels that it is hard to remove and refit.

Playfield glass very hard to slide in or out: revised glass guides

Cause: The plastic glass guides under the side rails held the glass too tightly; the maker supplied slightly altered guides.

Checks

• Remove the side rails and look at the plastic glass guides stapled beneath them.

Fix

• Unscrew the side rails, pull the staples from the old guides, fit the revised guides, refit the side rails and slide the glass in.

Games

• Star Trek (Premium)

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