There seemed to be some confusion. According to the manual the 'Eject VUK' (Vertical Up Kick) coil is what causes the chipping in the shooting lane. The coil power can be adjusted in the service menu ADJ > G.B. > Feature Adjustment #11 - Trough Eject Power. Mine is set the lowest power 176. This helped a bit, but I have also installed a cliffy protector.
The other issue is the 'Auto Launch Assembly' firing way too hard. I was worried that is was going to crack the plastic on the back as most of the time the ball ricocheted off the wall into Stay Puft or came bouncing back down the shooting lane. This is what the replacement spring fix is for. Easy to replace.
2. Compress spring to raise up the coil off the coil stop.
3. Rotate everything out of the way, replace the spring, and reassemble.