Quoted from awesome1:
OK... I MAY have found a good solution to the auto launch issue. I've tried all of the 'solutions' and so far have had the best success with this.
A shooter lane cleaning and wax or wipedown with "Wizards Mist and Shine" will result in almost 100% success for the short term and then slowly the auto launch plunger will no longer make it fully around and down to the right flipper. No adjustment to the power setting makes much difference in my case. I've shimmed the shooter lane ramp, secured the outer lane guide, etc... nothing has offered a long term solution so far in my case.
Last weekend I changed out the auto launch coil from a 23/800 to a 23/700 to give just a little extra boost. (remove the diode if new coil has one).
Before changing the coil I was at 0% success as it had been a week since cleaning the shooter lane. I replaced coil, didn't clean shooter lane and I'm now at around 95% success rate for the ball getting all of the way around back to the flipper and I have the auto launch power setting at only 215.
I've played several games including a 1.4 Billion game this week and the success rate is so far staying very very high.
I'll do my normal cleaning this weekend and report back after getting many more games on it this holiday weekend to see if this is in fact a good solution.
*** My Best Fix for Auto Launch and Manual Launch Problems with ball not making it all the way around to right flipper ***
I have a couple weeks of time and many, many plays on my AIQ Premium with my "fixes" for the Auto and Manual Launch / Plunger issues. (I've tried many and these are by far the best continued success I've had... your results may vary.)
I changed the "Orange" OEM shooter rod spring to the stronger "Red" version.
I changed the 23-800 Auto Launch coil to a stronger 23-700. (Remove Diode if coil has one)
You may need to play with the Auto Launch strengh settings for best results. I have been at 230 for over a week and a half now. Success Rate for Manual plunge is probably ~98% and Auto plunge ~95%. Very rarely a launch won't make it all the way around to the right flipper now.
Keeping the shooter lane clean/waxed also helps, but not as critical to success now. Centering the plunger rod tip and also the adjustment of how the auto launch tabs hit the ball can impact the launch success rate.
Note: I also added a bent lexan piece under the gauntlet to keep occasional stray ball launches from lodging under the gauntlet.
I also removed an earlier "fix" of raising the shooter lane left side of the ramp slightly since this with the stronger plunges would sometimes get air under the ball and lead to more balls going under the gauntlet.