I haven't seen this before. I have the Fisher 8'6" straight blade. I've used it once so far this winter, it worked fine. Now it angles to the right fine but when I try to angle it left it was hitching, fetching up and barely moving. But, it'll work fine on the ground! Left, right, no problem. But if it's lifted it won't angle left. The fluid level is fine and it's changed every year Any ideas what the problem could be?