Bummer on the .99 code. My machine definitely has all of the side effects mentioned here.
Got my Tibetan Breezes installed yesterday and they made a huge difference. Played for a few hours tonight despite the code issues and was crushing the tk lock. Definitely a must buy for this machine.
After the tk locks performance tonight, I thought I should mention a couple of adjustments that stood out to me. First I should say that I have messed with the lock mech since I've had the machine and no matter how precise I had the mech arm from the back of the cabinet, the mech never seemed like it worked right. I even tried pulling the ramp out as far as I could and that seemed to make it a little worse. One thing I never adjusted until yesterday was the height of the rod. The height on the rod was a solid 2 1/8", way higher than Stern and chuckwurt suggest. So I bent the rod to about 1/16 under 2" and made sure it stayed there. The other adjustment I made is little harder to explain. The general idea was to pull out just the left side of the ramp and stick a 3/4" rubber ring behind it as a spacer. The thought behind this was to bring the back wall of the left side of the ramp closer to the lower part of the mech arm so that the mech arm was more underneath the ball instead of on the side of the ball reducing potential pinching and so that pulling out the ramp didn't create as much of a lip for the ball to travel over as it travelled up the arm. I added the tibetan breezes, lowered the arm and pulled out the left side of the ramp throwing scientific caution to the wind, so I can't be sure if it's just one adjustment or another that makes my tk lock work effortlessly, but it does. I also noticed that it just sounds better now (smoother?), there's not a lot of extra noise. Hope this helps somebody, hope my breezes help get me to the Final Showdown, and I hope the code is fixed by Friday afternoon.