Torqueflite A998 Auto Transmission Troubles

TheLeftybar said
Like could the high line pressure and an improperly adjusted kickdown band keep the transmission from shifting into 3rd

No I think not.

I think you mighta mixed up some springs. I'll have to dig up my manual and see if that's possible.
Are you absolutely sure that you assembled the governor correctly, with ALL the parts.
Don't worry, the E-clips are still there, lol.

I gotta go out for a few hours so, TTYL.