Anyone have any experience fixing Western Uni-mount plows?

I was doing a little drift clean up yesterday (cold as hell out) when the plow stopped going down (float mode). Left, Right, and UP work fine.

I took the plow off in the garage and let it thaw out. I heat-gunned the valve box for awhile. Tried it again and still no down.

I haven't tested for power at the S1 solenoid yet, but I'll try that when I get home later. I've never messed with check/control valves before, but I hope it doesn't come to that.


haha... just realized my plow broke the official first day of winter... naturally.