If the thumbwheel works smoothly scrolling through menus and any other function, I'd be thinking signal strength issues might be the problem.
You can try to change the operating mode of the remote to see if signal strength is affecting the operation. MENU, SYSTEM, REMOTE SETUP, OPERATING MODE, SPEED.
This will change the remote operation so it doesn't look for replies from the DCS engine. It just sends the commands blindly and continues on. If the thumbwheel suddenly works properly, it's not the thumbwheel.
FWIW, I took two of my remotes apart that did have thumbwheel issues and used contact cleaner on them, good as new.
I removed the screw in the battery compartment. I tried to pry apart the remote case, but stopped when it seemed if I went further it would crack. Is just brute force or is there a better way to separate the case?
