I also found enough little wooden blocks, strips, and wedges in my off-cuts to affix some bumpers/stays to the sheet of plywood I keep my #KORG #FC6 #MIDI foot controller and KORG #PS2 pedals on under my desk. Similarly, they were always sliding, getting kicked or bumped by my office chair, etc. Less frequently, cables getting disconnected.

At this point, I had a pretty good idea of what placement and angles felt best. Again, no longer a frustration and easily improved iteratively.