Thanks for this thread, everyone. It was very useful for me, finally managed to get a useable sidestick. With the 3d printed piece, angle adapter from qr4 and just a bit of rotation on the grip, it's been transformational. I advise caution when setting up the rotation if you are to be running a side stick, as it might be too straining on the angle adapter.
Currently running force only mode, at about 4.5kg, which is just comfortable enough to be able to do decent formation keeping, refueling and the more precise operations.
I have never been able to try the fssb, so I cannot compare, but after getting everything together it's exactly what I imagined it would be like, a plane that actually responds the way I want it to. Need to give BMS a go at some point to compare