TYM 723 hydraulics heat up using remote float

I am using the float position on my remote when using a drum mower. The hydraulics heat up to the point that engaging gears is delayed. I have 700 hours on the tractor. My understanding of the valve is that the fluid should flow through the body the same as when in the neutral position so the fluid shouldn't heat up more that normal. The workshop manual shows the flow through the different positions. Is there an adjustment for the float? The manual doesn't show one.

Has anyone added a...

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TYM 723 hydraulics heat up using remote float