If you rebuild the original flippers you shouldn't have any reasons to change to a whole different mech altogether. The only games I can think of that need this are the older Ballys with the linear flipper mechs.

Also, be sure that the coils that are in your game are the CORRECT coils for the game.

I'm restoring a Williams table right now that had the 11630 medium strength flipper coils installed, but is supposed to have the high power 11629 coils.

My best guess is that someone got lazy and at some point replaced a bad coil with whatever they had on hand, or put in a weaker coil to make the playfield plastics last longer.

Did just that, was a pretty big improvement over the worn out and beat to hell flippers that were originally in there.

http://www.siegecraft.us/blackknight6.htm

Not a tremendous difference though between upgrading with WPC components and rebuiling with all-new System 7 style components, you still need to keep the same EOS switch in there and you need to keep the same as original coils too. So performance is pretty much the same between the two designs when everything is brand new.

However, they will have better longevity with the different style return spring, better material in the plunger link, and a replaceable coil stop. I wouldn't go with higher power coils on Black Knight either. If you can make the left ramp, then you don't need much power. All the other shots are pretty short, you just don't need much power for them.

-Hans

I gotcha. In your case, a bit more strength coming out of the primary wrap in the coil may be in order. You can either replace with a stronger coil, but it's also a possibility to take a few turns of the wire out of it as well. Never done it on a dual-wind coil, so can't really help much in that regard.

That reminds me, I may want to steepen mine a bit too. I get too many turnaround shots going straight into the left outlane, too fast for the magnet to catch.

-Hans