Did you replace the clamp on the flipper mechanism? If it is too bent it will never grip the flipper shaft even if you try to bend it out. I have read of a few fixes for the bounce out issue. 1.washers between the saucer and the playfield. 2. Padding stuck behind the hole. 3. Slotting the holes in the bracket behind the hole to move it back. Adding a cliffy which you have already done. I would be interested to know how you go with it as I have an Indy with the same issue.