Ooh, I’d just mailed them this morning actually for this exact reason, the missus pointed me here. I had a set of the 29er Max wheels, the front developed play within 1 ride so I sent them back. They swapped the wheel, all sounded very puzzled, new set came back good, all was well.
Another week on an the front had it’s normal play back. I thought it must just be as I was using QR, and most people buying them would use the other axle options, so I just ignored it. A month or so on and now the rear has play too.
This is only the Max wheelset I’ve had issues with, I had an old £100 Superlight (2.4kg) wheelset from them before this, and they were fantastic, were it not the weight I’d chuck these and just use them!
Using a completely standard setup, Scandal 29er, Rebas on the front, 14 stone rider, 6’6″. Never had any issue with this sort of thing before, my Hopes normally go about 2 years per set of bearings. It doesn’t seem to be the bearings, it looks like play between the end caps.
I did wonder if there was just a dodgy batch?