2013 Reba RL 26" 120mm Pushloc solo air, bought new in February, has started to sink into it's travel. I tried to pull the stanchions out by hand and realised that I probably haven't seen all those sag markings in a while... It's probably been gradually happening over some time now, I just didn't think about it until they were barely visible at all (the top 80mm travel ones that is).
More air gives me a little more stanchion showing - 130 psi gives about 90mm, which is as far as I've been willing to try. Removing all air and adding again does nothing.
Sounds like a typical case of negative air leaking into positive chamber, right? Or are there any other suspects?