I’ve had a slightly different experience with my McQueens.
First set of forks were on my Solaris Max and after about 10 months the lock-out failed. Had it sorted under warranty by Upgrade bikes and it was fine until the bike got nicked 4 months later.
Subsequently bought a Pole Taival and stuck on a new pair of McQueens.
Lo and behold, the lockout started to go funny after 6 months and it was sent in for warranty repairs during which the damper was replaced.
Overall I love the forks but on two occasions on two separate forks I seem to have had the same issue. Funnily enough, nobody else seems to have this issue with the forks from my extensive forum trawling on the subject. Wondering now if it is my style of riding!?
btw, both forks had/have the standard damper.