Had about 2 hours to finish the other night and lost hydraulic functions on my 8210. Filter has about 40 hours on it, have brakes, steering acts fine. So appears everything on priority 1 is ok. Thinking my problem is in/the priority valve. Tractor has 7k hours, so was wondering about costs of a new pump and priority valve. Anybody checked on, or paid for one lately ? TIA. J