Treg coupling sloppy

Why not contact TREG. They can probably repair or rebuild.

If the movement is in the long shaft section, you should be able to take up any slack by adjustment of the large nut at the rear end of the shaft.

I can't check with mine, because it has a mechanical brake option and therefore is designed to deliberately move, unless the locking flap is in place.

Will have to watch that on mine if thats the case myn done about the same klms maybe a tad less but just went and checked myn doesnt seem to be any movement so far. Wonder if there is any form of recall, would still be under warranty wouldnt it ???. I dont know what the warranty is on a treg coupling, would it go with the manufacturing of the camper or would it be a separate issue ??? Regards Steve M

Mine did the same after our last trip so removed pin (with screw and hammer) then did the nut up till almost tight and drilled a new hole in the nut then replaced pin.