06 Mazda 6 Automatic Tranny Problem Possibly?

i have the sport model
with a 6 speed power shift

problem i having is the car is shaking
i have tested the wheels, the drive lines the cvs and was told it was in the tranny si there a common thing inside the tranny

and it has 123k kms on the car so any info would be great

bout it at 100km and now its acting up can anyone advise.