I cleaned my newly purchased Dirty Harry and waxed the playfield, making the game play much faster now. the problem I am now having is that on a clean shot to the right ramp, the ball launches off the ramp exit, over the lane gate and back towards me, missing the jackpot almost every time. I just don't see much for an adjustment since the left ramp comes right over the top of the right ramp. I'm thinking of adding a clear cover over that section of ramp to keep the ball in play, similar to the one on the left ramp. Does anyone have a solution for this? Also wondering what production number my pin is. Is it the last four digits of the S/N #?