I've been hunting down a hydraulic leak coming from the rear of my b26 for months now. Every time I thought I found it a week or so would go by and I would find that deflating spot on the garage floor. So today I took off the rear wheel and pulled back the seat and with just the right lighting I was able to trace the oil slick to the top of the hydraulic valve that controls the front end loader. Now the bad news is I'm thinking I may need a whole new valve. It seems the oil is coming from the two plungers on the top of the valve that control the bucket roll and the raise and lower function. Does anyone have any info on weather or not there are some kind of replaceable o rings or gaskets on those plunger? or maybe it is rebuild able?