I have a new to me 4930, and was wondering about the automatic rinse feature. Is it normal to see 125 PSI when going thru the rinse cycle?  The valves seem to be opening like they should, It seems like pressure is a little excessive?   I am fighting a couple leaks on the boom that only show up during the rinse process?

Is there a way to lower the pressure?  Or keep the engine from revving up?  


Thanks!