I have a L555 serial number 624???. so it is a old machine after 4 yrs getting back to work on it. Previous owner locked out hand control for the boom hyd controller. I don't use or intend to use aux hydraulics on the machine and was wondering if I could bypass this section of the hydraulics. The main charge line from the oil cooler burst. They offer a cap to block this off, but can I just install a plug into hose fitting for return from aux hydraulics controller? I don't want to go to expense of hydraulic hose for something I don't or won't use.