I just purchased a SnowEx Speedwing last tuesday, and finally got to hook up and leave the dealer with it this tuesday. I immediately went to work and started plowing. After only using it for a couple of hours it quit raising up. I can move it left to right and detach and attach it but can not get it to raise on it's own. Took it to the dealer and when they contacted SnowEx, they were told that the 4way valve needed to be replaced, and probably had debris in it. So after waiting two more days for the new valve, it still does not work. I have now missed out on two sizable events in my areas getting to use this plow, luckily the meyer classic is still running strong. Any ideas as to what the issue could still be?