I have a 2019 challenger rt with the 8 speed auto and need help qith my 1-2 shift. Ive done everthing i can think of and still cant seem to get it to shift properly. I have the 1-2 shift to ahift at 5600 rpm, but it doesnt shift till about 6600 rpm. Nothing ive done has worked, and ive had other tuners look at it, and still nothing. Any help would be welcomed