having problem with back boom-slow and leaks off
Pull the cap of on the bottom of your valve ( for the boom) clean it up , mine was a little loose once and did the same thing. I've also pull them apart and replaced a few 0 rings.
Welcome to HEF, Goble ! Do you have a service manual for your 580SE ?
Ooops, I didn't notice you have been a member for over 5 years.
That takes skill. 5 years, no messages, and still remembers the credentials. I can’t even remember what I did yesterday!