The 3 point hitch on my Ford Jubilee is slow to raise. After I start the tractor, I raise the quadrant lever and sometimes it takes a while for the 3 point hitch to raise; sometimes I have to lower and raise the lever 3-4 times before it will begin to raise at which time it raises slow. When I pull the the throttle back, it will sometimes raise a bit faster. When I shut the tractor off, the hitch lowers itself to the ground. It has done this since 1995 when I purchased it. What should I look for, any ideas on how I can make it work faster? Thanks.