Just finished the rebuild of my 990 and took it for the initial test drive. Since all of the linkages where completely disassembled for paint / repair, I know everything is off. I have to hold the hydro lever all the way fowards to move, if I let go of it, the tractor stops. Currently to get reverse, If I push the brake pedal all the way down, the tractor will go backwards. Which adjustment do I need to start with to get closer?