B3030 Loader (LA403)

[Steve_Miller]

Loader has no down pressure, lots of lift pressure. Float position works. Swapped hoses with curl function and loader lifts in both directions, only drops when lever is put into fast dump position. Have heard someone say that you cant swap to troubleshoot this way as there are different pressure settings or other things going on in the valve body. Curl function seems to works properly though when swapped. I was assuming I had a cylinder bypassing but cant explain why it bypasses going down but not up. Any hydraulic gurus that have run across this issue? Blown 'o' ring in spool body down position?

Thanks
Steve