Thought I’d share my most recent work project . I have done several of these transmissions with the same issue. 3-4 upshift slip or flare between shifts. Here are some disassembly pics. Enjoy.
What are you finding as the main problems?
I am working with an AT shop near here developing a rebuild ATF. The MERCON® LV fluid doesn't seem to have the FM longevity needed for 150,000 mile OCI's.
In addition, while the dual filter system removes particulates, the quick lockup feature of the TCC on upshifts shears the fluid pretty fast.