Ball hangs up beside the apron after cleaning: loosen and reposition the lane guide

If the ball starts sticking in the gap between the inlane guide and the apron just after the playfield has been cleaned and waxed, the lane guide has probably been nudged. Loosen its screws, slide the guide slightly so the ball has clearance, and tighten it again, rather than bending the guide wall. Also check that the apron sits fully in its slots.