It's your pin, and I am not knocking you for making changes to it, but one of the most critical shots for scoring in that game is backhanding the left ramp during multiball.

Because of the unique angle of the gottlieb mechs, I am not sure you will be able to make that shot with other mechs.

Just a thought....

Rebuild them. These flipper mechs are just as snappy if not more than WPC.

But yes. Any mech will fit if you buy complete assemblies and use the correct coil. The only thing that may not work is if the gottlieb coils aren’t the same length as the WPC coils. Not sure.

Gottlieb flippers work fine if working properly and set with the flipper bats set at the right angle, there set pointed down more than other manufacturers.

Using a system 1 coil stop and modding in an extension spring can help a lot, but the whole mech just isn't the best designed. Even with a perfectly rebuilt and tuned mech you only get performance on the level of a Williams mech with 1000 plays. For games like my Surf n Safari (which the ramps on this seem similar to), I haven't had any issues with the regular mechs after some tweaks. On games like my stargate they just couldn't cut it though, and I swapped to Williams mechs. I used ones from pinball life which had an extension spring, a high voltage eos+cap, and fl-11630 coils, and the tallest coil stops, and it worked well

The system 1/80 coil stop is about 7-8mm tall. The system 3 coil stop is about 2mm tall. So you get way less travel with the older stop, which means the flippers don't go up really high, which makes the game play more like other games