I burned a test chip to force the unit into lockup and upshift early to test the gears at lower vehicle speeds. Re-ran it again, Drive, at 2,000 rpm, speedo was showing 40 mp and 4th had been commanded since 25 mph, lockup since 12 mph. Dropped to 3rd, 38 mph, dropped to 2nd it dropped to about 35 mph. I could feel a very slight and destint clunk shifting down manually 4-3 and 3-2 and placing it back in 4th resulted in it still holding 35 mph. If the clutch packs were smoked wouldn't the fluid smell terrible and be burnt? I used my vacuum oil sucker to extract some fluid, it is pink as can be not burnt. Driving it down the road shifter in Drive or 3rd and PCM commanding 3rd or 4th it also pulls instantly when the throttle is opened. I just find it odd that if the solenoid or shift valve were holding it 2nd gear, why does it have a distinct clunk shifting down with a corresponding change in output speed. I also noticed with the brake switch disconnected TCC slip is reading negative value in 2nd gear and increases to a positive value in 3rd and 4th. I have seen negative slip in park but never in gear, but never run one on jack stands either watching all the data. Converter locks in 2nd but releases in 3rd and 4th. PCM is commanding it to release for some reason even though the lockup is enabled in 3rd and 4th at the same speed the upshifts are set. Could the shift valves letting just enough fluid through to provide a change moving the shifter to around and not enough to actually upshift it? Just weird all around.