JCB 3xc leaking off

[Danny P JCB]

Good day folks, got a 2020 jcb 3xc at work, we blew a hose for the swing early last week, got it replaced, did a few other jobs with it late last week. now today i notice when driving the backhoe, the rear boom will leak off to the drivers side. wont go to the passenger side. the hose blew on the cylinder for the drivers side which lead me to believe maybe some air was trapped in the cylinder that hadnt worked itself out yet. swung the boom hard each way, which then stopped the leaking off issue. later on the problem came back to it leaking off that same way.

any ideas where to start? stuck valve maybe? any help is much appreciated
Thank you

 

[Alan]

Hydraulics on these machines are way outside my wheelhouse but the way you traced it back to the same hose that blew is a pretty solid clue. Odd that swinging it hard resets things for a while that points to something not seating right rather than a simple leak.