I would consider a weaker coil. I would think you could talk to steve young at pinball resource about this and order one from him.

Install a weaker wound coil.

You can bend the EOS so that it opens sooner. On Meteor, Stern used a cement resistor in-line to reduce power of the upper flipper.

What's on there now? I'm guessing a AQ25-500/34-5050 is what you're looking for.

Put the coil Pat used for the upper flipper on RCT. That one seemed weak enough...

...or was that Ripley's?...

Sorry, the first code should be AQ25-600 not 500. The second isn't as important and may something like 34- 4000.

The 30-second attempt to fix it is to make the EOS switch gap larger than it is now, so it opens earlier. If you go too far with this you'll get chatter, however -- it's a no-part-required attempt though. This reason this works is that when the switch opens the coil is running on hold power (which is a fraction of the "flip" power); if you go too far the flux between the plunger and coil stop will be too weak when the switch opens and thus you will get chatter.

If that doesn't do it then as noted a weaker coil is the correct solution. See what's in there now and we can make some suggestions; you want a smaller gauge (larger number) and more turns than what you have now.

I have had a smaller flipper installed for years and prefer gameplay that way.