I have a similar issue with a High Roller Casino. Was going to get a “hotter” coil if one is available ?

So the trough coil is labeled "Stern 09-5023-0T" below that it reads 22-600 (I take it that is the wire gauge and number of turns) which the last number per the link above is supposed to be the equivalent Williams coil (22-600) but when I go to the Williams section there is either a 22-550 or a 23-600...not a 22-600.

Either way - what coil could I get (without taking one apart and eliminating wraps) - to hot rod this a bit to make sure every ball gets up the trough? (It's a pain in the tush during multi-ball because then they just start stacking up...ugh)

BTW- I did add another washer on to the two pronged ejector mechanism that kicks the ball up the trough. There was a lot of play and I had an earlier suggestion to make sure it was aligning properly. SO the switch works, the coil works, and it's aligned - but 1 out of say 10 times (after added said washer) it still isn't making it up the trough. And I've actually lowered the playfield to 5 1/2 - 6 deg...any lower the ball wont roll...lol So it's not too steep.