I have an International 460 diesel utility tractor and the fast hitch (converted to 3 pt) does not raise up as far as it should. The adjustment lever is not on the dash like most 460's but on the right hand side of the seat. The other two remote levers are on the dash. Here is the problem-- with the lever in the all the way up position the hitch is about 3/4ths up, with the lever in the half-way position, the hitch is all the way down. If I put the lever down further, the hitch wants to go down more but cannot because it is already down. There has to be an adjustment somewhere but I cannot find it. I don't understand completely how it all works. Any suggestions?