Tried bending the overhead guide but still had bounce backs (which, IMO, is not part of the game experience as it's already a difficult shot) but this seems to solve the problem assuming you don't add the spacers as mentioned above. I would, however, recommend removing the Battle the Power ramp so that you can clean the sides of ramp and properly apply the magnetic tape. It's a few screws and gives full access to the lock ramp.
What a great pin TZ is!