I'm not sure to which extent you have the possibility to access a tracker organ. If you do, how would you compare the Schwindler touch to the real tracker one?
Yes, I've played a lot of tracker organs, and as you say, nothing is more different from a tracker organ than another tracker organ...
I couldn't objectively compare realism of Schwindler keyboards to Fatar or UHT ones, as I haven't played any of those, but I would say that the keyboards I own, such as they are regulated right now, do feel like a moderately large organ with good suspended action.
It feels like it but it is not close enough to get misstaken with the real thing. I know of no real tracker organ with such homogeneous feel in the keyboards : on a real organ, different keyboards feel different, even without any coupler engaged, and the valve opening is never felt exactly at the beginning of the movement of the key, whereas with the Schwindler keyboards, the utmost resistance is felt immediately.
That said, with a good sampleset playing, it is easy to feel soon immersed in the sound and forget you're playing a virtual organ...
And I maintain that such as it is, it is an excellent console to practice on so I am confident that when I am satisfied with playing such or such piece on this console, I will be comfortable with about any tracker. (Some exceptions of course, such as playing the Riepp organ in Dole where the action is so heavy no virtual substitute can prepare to...)
As for your problem, Pat(rice ? rick ?), I would suppose taking the habit of playing different kinds of keyboards, practicing the manual parts of a piece on a piano for example (even an electronic one of course) could help a lot.
phjo