I have an '05 4115 Jd 4wd and purchased a 5' power angle snow plow for the quick disconnect bucket. I was told that I would have to add another control to be able to activate the power angle and still be able to use the bucket controls. When I installed it this Summer using the existing dumping control from the tractor/loader the plow only angled about two or three inches and wouldn't continue. I bled the lines and the pistons twice but to no avail. What to do