Kelly see if the lift has any effect on it. I've seen some supers that when you hit the lift or even steering it changes speed. As far as I know it causes the charge pump pressure to increase and that gives the piston pump a boost in pressure.
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2264 with 54 GT deck
1641 AKA Black Jack with a 402-E Haban Sickle bar mower
JD317 dump truck
BX2670 with FEL
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