My 1680 hydro is about done at 3300 hours. Abilene Machine has rebuilt hydros for about $3000. They tell me that includes a matching hydraulic motor because you replace them as a set. Do they need to be replaced together? I think I can get the hydro rebuilt by Beiler Hydraulic in Lancaster PA for a fraction of this cost. I really don't want to spend the time (or money) to pull the motor if it's not needed.