greetings from the other side of the pond.

not sure if you have the 722.9 trans or 722.6
the 722.9 trans has a tsb for diag codes 2502, 2505, p0894, p2711
and 3rd clutch failure.
the problem area is the k1 piston according to the tsb.
so if they replaced the 3rd clutches and plates, and the piston that applies them is bad, the new plates and clutches will fail also.
don't know if they replaced the drum and piston and clutches and plates?
the bulletin says to replace the entire assembly and reset the adaption data.
That is for the 722.9 trans
also it says if the drum/piston assembly is not the responsible party, then replace the valve body, and do initial start up.