I have tried everything I could between google and here to get this 3 to 1 downshift to quit lurching/jerking forward when coming to a stop. It's clear in the logs it happens at the moment it shifts down to gear 1 from gear 3. The only thing that has gotten it slightly better is making it shift from gear 3 to 2 then to 1.
I've used most of the advice here to disable the TCC unlock and locking through gears 1 through 6. I've tried both upping and lowering the shift pressures, desired shift times 3-1, and disabling the CT downshift. I'm very new to this all but I will say everyone's advice has gotten me a butter smooth trans from what it was. Even the shop I had the trans rebuilt at and a new TC installed couldn't get it right.
Thanks in advance!