I recently replaced the o-rings on the pistons and the seal on a leaking spindle. The service manual only goes so far in the timing aspect. I guessed what might be correct and was wrong. I pushed one piston against the plug that wasn't removed and placed the other piston against the opposite plug. I lined up the V on the spindle to one of the timing marks on the retainer. Upon reassembly I noticed the steering arm (wide-front) only bolts one way (the bolt pattern is slightly off, at a glance they "look" symmetrical). I removed the front wheels again. Placed the "V" on the spindle to the other mark. This time I was going to check it before connecting the wheels again. My steering wheel was hard turned to one side - which in my logic was correct since I aligned the "V" to one of the retaining timing marks. I started the tractor and looked at the spindle - it moved almost 120 degrees without touching the steering wheel and thus threw it all out of wack. I can only assume due to air. Would weight of the wheels had stopped it from turning? Can someone hold it to keep it from turning when you first start it? I HATE to put the wheels back on only to take them off again. Is something else a muck causing this? Having said this, had it not moved, I believe I had it correct this time where the V would have been at the rear with wheels straight and the steering would have moved the 120 degree between the timing marks.