Had 5mins today to check why the rear light wobbles, turns out they mounting has broken, tried a Diy repair but not too confident, what a piss poor design, and no used ones about wonder if they all snap.
Tried to melt the plastic to form a joint, that broke soon as so the next option seems a bodge job but should work till i get a replacement.
Nope ain't broke any mounting brackets, but I am on my 4th yes 4th new rear light because the LED bar becomes unstuck from the internal lens and rattles around like a good un. £152 is what they cost new.
They don't all break. I had my first 210 until January 14, no problems. My current bike I've had since then without a problem. The first batch of original bikes had a very flappy rear number plate / light mount. The solution was to put washers under the 4 bolt heads that hold it in place, to squash the rubber mounts. I think your 'bodge' could be a good long term fix, just make a full U section and pop-rivet it in place
Yes think it might be ok, could have done with some Meccano lol, not proud of the fix but at £150 odd it's going to stay for a while.