Evening all

Over the course of the last few rides I’ve noticed that my rear maxle lever no longer closes properly and hangs open as I’m riding which resulted in my maxle starting to unscrew at the weekend.

I’m guessing this is a commonish flaw as they seem to be made of cheese so what are my options for a replacement? I swapped the front one for a maxle lite which seems much better, do they do these fr the rear?

Alternatively can I use something better from a different manufacturer or is it RS only?

Bike is a 2013 T129 with factory wheels.