I had this fork problem once on a Yari solo air, after a lower leg service where I hadn't extended the air shaft before installing the bolt. This resulted in negative air pressure in the lower leg. Doubt it is your problem unless the lower leg was removed but looking at your issues who knows. I solved it by letting all the air out, breakng the seal on the fitting bolt, putting in some psi to extend the air shaft and lower leg and refitting the bolt with a new crush washer.