Case 650K Steering

Have a 2004 650K and a rat chewed wiring & have repaired all that I found. Even had a Case mechanic visit @ $100. an hour (plus travel @ 2.50 a mile) & he found 2 wires I missed on the Left hand solinoid @ transmission. Before he fixed that the dozer would work forward but lock up in reverse & transmission light would come on. I only tested it breifly & it would now work in reverse so we both felt that was all the problem. After he left I put it back together & I noticed that it would pull to the left & I would have to continously steer it to the right to go straight & after a minute or so the lite would come on & I could go to reverse & it will go off for about a couple minutes & then the lite would come back on, both forward & reverse. Before his visit I redid the wiring @ the rear on the speed sensors & steering solinoids as all the insulation had fallen off. No wires were broke or touching so I put heat shrink & reinstalled the harness @ the rear. Could I have put something back incorrectly? Any help will be greatly appreciated. Thanks, DWR1949