Slipping 2-3 shift

Did you adjust the line pressure correctly?
The Gap between the Clutches came in and the Band gets of is too big.
Did you install the orifice?
I had it one time that we installed the orifice and had that problem.
After removing it again, everything works great.

Otherwise its like the other Guys say, the Band adjustment is maybe wrong.
I think the Front band gets 2,5 turn out.