Outrigger problems!! Please help!!

Hi everyone,

I have a grove tms 375 hydraulic crane and I'm having issues with the outriggers.
The four outriggers extend easily when operated, but they won't retract easily. Sometimes the outriggers just get stuck and won't retract when operated. I have serviced all the solenoids and valves controlling the outriggers but it still wouldn't retract. I also checked the hydraulic pressure from the pumps and they seem so high and sufficient to operate the outriggers. I extend the outriggers...

Outrigger problems!! Please help!!

Outrigger problems!! Please help!!