SMG Clutch Slip

[cps]

Hi wonder if you could advise, I have a CSL. I have clutch slip when changing down to accelerate. I can se the revs rise, drop and rise again in clutch traction. say 6th to 5th.
could someone clever advise if there is a clutch curve reset I can do without garage help using some combination of paddles/buttons etc?. Before I bought the car the diff was changed for a new one under warranty for a slur into gear, which sounds the same. I don't track it or drive it often. it has 52k on the clock, so not many miles on the clutch I guess.

if not and a dealer is required, would warranty approach ( i have warranty) or a trip to Bartlett be a best bet way to get help? I don't have the software shown in the clip below.

I don't post really just read .
thanks in advance