Serviced my reverb a while back, haven’t rode much since. Today I noticed that it bounces up and down slightly while riding (about 5mm) and after a while it drops by 5-10mm max, also it returns slowly when on the fastest setting and if I put it on the slow return setting it locks it out completely and won’t drop down. Is it needing more air pressure or do I have to strip it down again?
Cheers in advance for any wise knowledge on these most excellent seat posts.

mine did something similar LBS bled the lever all was well

Cheers for reply. Thats the answer I wanted to her as the easiest and quickest fix.