wowzers guys I can realate to that one! I just restored my cyclone machine with new coils, displays, LED BULBS!!, rubbers.....and wow. I put the FL-*****-29 flipper coils in and I can't even get a shot on the comet ramp! The ball hits the ramp so hard and hits the glass and goes into the ferris wheel, and when I hit the drop target for the spook house, the ball smacks the glass again. I think that it is cool, but, I have been wondering about that one as well. How hard does the ball have to hit the glass to break it.
I live in a big city, and my house is right in front of a public transit bus shelter, and that glass is like 1 inch thick!!!! YES its tempered glass as well....and kids STILL can break it, mostly with a bb gun probably, but geez, pinballs CAN still do that type of damage I would think. And its an F of a mess to clean up! (do I sound like I am complaining?) NO, I just HATE living in front of a bus stop cleaning up the garbage and cigarette butts and fighting with the city about it. I have put out a garbage bin, but HOW IS THAT YOUR PROBLEM.......ok.....sorry folks!
So, don't put kick ass coils for your flippers unless you want to break stuff in your pinball machine!!!