it sounds like the front pump its called -- the gears were not changed or the pump it self is worn ( gear cavity ) and the oil when cold is thick and the trans has more pressure, when it heats up the oil thins and its bleeding off - note reverse takes 35% more pressure to operate so its normal for it to be softer when pressure is low -- A TRANS SHOP SHOULD BE ABLE TO PUT A PRESSURE GAUGE ON IT AND CONFIRM -- JZ
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