I played a couple games on my firepower this evening and was thinking about the gameplay on the Duel. As others have suggested in the FP owners thread, I pulled out the upper left gate so strong initial ball launches could whip past all 4 'F I R E' lanes, race through the spinner and risk an immediate drain - it creates a bit of a skill shot to get the lanes. I think this would be a good mod in Duel because the ball won't automatically drop through the lanes and begin accumulating crystals. One could use a strong plunge to get the ball to the flippers more quickly to get a jump on inflicting damage. Or, if somebody wants to start collecting crystals right out of the gate they will need a properly placed launch shot.
Of course an extremely strong launch can get quite a few spinner spins and give the ball to the flippers for quick attacks, but there is the risk of a quick drain!
-Rob
-visit http://www.kahr.us to get my daughterboard that helps fix WPC pinball resets or my Pinball 2000 H+V Video Sync Combiner kit