Quoted from mystman12:

What coil does everyone here have in their left flipper, and what pitch is your game set at? I've just finished a complete teardown and cleaning of my Stargate, but I'm still having trouble with the left flipper being unable to make the right ramp shot. I rebuilt the the left flipper almost a year ago now while it was still in the arcade, so I'll probably rebuild it again soon, but the rebuild I did at the arcade didn't make any difference in the flipper's performance so I doubt doing one now will fix the issue either. I also tried putting a new coil in (A-25959 as indicated in the manual) and I almost feel like that made the issue a little *worse* even though the old coil was the same type.
Ultimately I'm not really sure what else to do other than to try a more powerful coil. Every other shot on the game can be made pretty easily, and I see videos of the game where the ball just flies through the right ramp, so I know it's possible for that shot to work well, I just don't know what it is about my game that makes it work so poorly.

Quoted from annex:

Just used the citrus stripper technique and installed the COLOR DMD. Game changer....

Quoted from archimandrite:

I was thinking of the Trade option when you have 7-9 Quartz.