The valve and controls are Kubota, installed by Kubota. I think the problem is one of the two lines that run forward towards the loader. One thing I don't care for (at this point anyway) is the site glass to check fluid level. Fluid is so clean right now, can't tell where level is. I bought a gallon of the UDH2 for the lines change, replaced about a pint, have no idea how close to full, if over etc. it is.