The fact that your drive appears locked up, I doubt it's the coupler, most likely your clutch failed. In order to check your clutch you will need special tools. You can pull your top cap and back cap and see if you have any metal or visible damage. If so, it's time to take the drive to someone to rebuild, but with the power you have, I would get a better drive.

just dropped it at the shop. He’s going to take a look this week. I’ll likely put an scx in that way I can spend my time boating, not wrenching

You'll need to change the helmet also ^^^^

👍👍👍

Need the HP gimbal ring for the SCX.
I used the COX stainless ring.
Very heavy duty, fit perfectly.

shouldn’t it be the same as the Marc hp gimbal that the xr runs? That’s before the helmet change of course.

Well the upper is trashed and metal was sent throughout.

guess it’s decision time now. Looking at like about 18k for a new upper sending the lower to imco for rebuild and a few other parts (helmet, drive reservoir and adaptor for the steering)

that’s probably the same as rebuilding and then Buying a spare

Well, your handle sure fits this hobby

My lower was full of metal when the upper let go.
That's the ball park on money.
I had to replace the ring. Pins, all bellows and hoses
shift cable.
Upper came with helmet, reservoir and coupler.
Got a good deal on a new xr lower.
it's a significant amount of work to switch too.
Doing it myself so going slow.

I hope it lasts.