Torqueflite taking too long to shift into 2nd gear

You could always try to adjust the front band, but without knowing the ratio of the lever, cant say what to adjust it to. But if shifts are crisp and firm, and don’t have flare up or real violent shifts from band overlap, and like you said no sign of anything in the pan, probably just need to find the sweet spot where to shift the car 1-2 to reach your desired RPM.
Doing that now. That creates an issue of consistency for the 2nd to 3rd shift, since it shifts on time according to the datalog. It's been suggested that I call Rick at A&A and see what he thinks.