Gambler, Can yo get the upper closer to the lower? I don't think on a P31 you have to get to any controls on top of it?? I want to be able to set the front of the upper, right down on or close with maybe a 1" spacer. And I want the slight overhang of the upper to lower...like some actual organs. That is really a great setup to have....you can even bridge your hand upper to lower to play some notes while holding others on opposite manuals.
The photo of my set up is deceiving. The front of the Genos keys are directly in line with the back of the Np31 keys. The gap between the keyboards is roughly 1.5" higher than the keyboards on my Technics G100 organ. There isn't that much of a difference when l play either.