I've had a Gravity Dropper Classic Multi for a few months now on my Orange ST4, mainly because of the limitation due to the 27.2mm seat post. I was sceptical at first but it's proven to be pretty good but I was out for a ride today and now it won't lock in position at the highest point it should. As soon as you plant any weight one it, it drops to the single track setting which is about 1" below top.
If you stop and give it a bit of upwards persuasion it will engage at the top of the stroke, except it then won't release without more persuasion which obviously isn't possible mid ride and defeats the object of it.
Any ideas? Was hoping not to have to rebuild it every few months, it's not even seen a properly wet ride yet since we did actually have a summer this year (woohoo).