John

  The extra hydraulic unit is buried in a trailer so let me dig that out today and get it on a table in the barn. 

   I did take apart my existing unit yesterday and found a o'ring that looked pretty suspicious, it was really flat and hard so I'm thinking it was leaking causing the fade when the tractor was running. That o'ring was on the hydralic pump housing where it bolts to the top hydraulic unit &quot; right next the gear lube fill hole&quot;, without looking I believe that's the pressures side of the pump but before the hydro valve. I believe this explains why the fade was only when the tractor was warm\running since the hydro check valve would close when the tractor is off thus holding the 3pt up. I did take apart the pump and hydraulic valve and they where clean and nothing was stuck or broken. 

  I live in Brimfield which is just outside Akron and my number is 330-607-6984. Give me a day or so and I'll have all the parts cleaned and in front of me so we can determine what's best to use. 

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Thanks
Eric