My Dx3s scroll knob and also the Ch1 and Ch2 trim levers are all out of whack. When I trim up Ch1 Ch2 will trim down lol. Also the scroll knob has no issues scrolling but there is a sweet spot that changes every time that I want to enter a certain menu.

I've never dropped my DX3s radio nor has it ever been wet, and since then I run nothing but Futaba from 2PL to 4PL and it does what I need them to do without ever losing binding or giving me radio glitches.

Since the DX3R is pretty pricey I'd send it in for repair.