Advice on trans problems screenshot included

[boostobsessed]

Hey there have finally started to tune the turbo v6 with a shift kitted 4l60e now im pretty sure the bands must be wrecked but wondered if there's a way to know for certain it isn't just a solenoid. I have looked into the quad driver 2 fault and from what I've read it was normal.
Also its running the xu6 base tune.
B.t.w I hope this is the correct category for this question.

[tobydog]

Up the line pressure work for me stoped my box from slipping and now changes under full boost would not change at all before