S185 auxiliary hydraulics keep hanging in one direction

[Ztays]

03 s185 that I just purchased a month or two ago this past week I purchased a used 4n1 bucket to use with the machine, now after hooking it up and using it for a couple of minutes the hydraulics are failing in one direction or the other, I have been though the controls and solenoids they seem to be functioning properly 10.4vdc control voltage at the coil so I thought I had it narrowed down to a stem valve failing ordered the 200$ part and it worked for about three minutes, and it started hanging again when it hangs u can bump the control the opposite direction and kill the flow while you have the switch pressed, and every now and then for you keep working it you may get the flow to cut off before it kills the machine. Insight and direction would be very much appreciated

 

[Bobcatdan]

Sounds like your right handle is junk.

 

[Tazza]

Sounds like your right handle is junk.

Could the aux hydraulic spool part in the control block be sticking? I know the stems make it move, but if it was sticking, the stems would work, but the flow would not always work properly.
I have never pulled an aux spool from a machine that uses stems to control it.