Andy here is another option. I see that Mixpad does MIDI so put a note on every quarter note (or whatever timing you want) for the sidestick. If you need the MIDI number of a GM sidestick I can get it for you. Do this for the entire song. Quantize to a quarter note (or whatever timing you chose). Save a copy of the MIDI track for future use. Set your tempo and save the MIDI track as a wav. The MIDI track can be used over and over as MIDI can be used at any tempo.

I have to run but if you want I will send you a MIDI track of just the sidestick at any interval you want.

I just posted a selfie and all of the responses were get well soon!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware