Change the fluid and filter and look for silt. If there is lots of friction material in the fluid, it will fould the filter and lower control pressure. This can be resolved by parking the car and letting the fluid (and silt) settle for a while, and aggrivated by high-rpm that picks up more silt due to the high flow.
A new filter should help, but you might have some slipping causing more wear (and thus more friction material in the fluid) so pressures should be checked.
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Gone to the dark side
- Jeff
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