It operates fine well at least not under a load so far but when you get to the top and hold the up button it wants to angle left slowly. I pulled the cartridges and inspected it to some degree. Checked the spool and poppet also. . Everything was flushed put pretty good and all the rams have new packing/seals. New hoses, New western fluid,magent filter etc. I just never tore apart the valve body 100%. Ideas on why it starts to pull to the left and it reaches te top?