Aode Slow 1st To 2nd Under Wot

I have a '94 gt, all stock with 100k miles on it.

It shifts good, no shudder or slips. But when getting on it in 1st, it's really slow to change into second. If I am just cruising the shift from 1st to 2nd is just as fast as the rest of the shifts. But if it's WOT and im pushing it, it takes about 2 seconds (!!) to go from 1st to 2nd, with a slight loss in power while it grabs 2nd.

I know the AODE's aren't real snappy, but it seems odd. I've seen videos of auto's chirping into 2nd stock (I am not expecting this with the highway gears it has) but my RPM/power seems to stop/float higher in the rpm before finding 2nd and dropping RPMs and continuing. And it only does it under wide open throttle (I think near 6k rpm, about 37mph)

Fluid is good, fresh and red... a sensor maybe, or just a tired old automatic? A new valve body will be coming soon as well.

2-3 is fast and solid under WOT. The shift solenoid is in the valve body? A newer/better valve body (silverfox or lenntech, undecided) is planned for next month, I've been told they are an easier install/produce better results than a shift kit.

Grounds cleaning is on the to-do list when I change the oil next, jrichker posted their locations for me when I replaced my headlight pigtail.