doing some plowing today with a semi mount plow, and hydraulics got so hot I couldn't touch the housing. I have not had any issues when using remotes, but after an hour of plowing I had to quit. I took main relief out and checked it over cleaned and put back in, went and tried it again, but same thing after a half hour this time got hot again. The draft control seems to be working right, but after oil got real hot, it would go down when lifting back wheel with remotes. I am thinking the next step maybe the servo/proportional valve or whatever it is called?? any help on where /what to look for greatly appreciated.