This guy has a bunch of posts about this at GMforum.com, I had pointed him to NEPontiac.org to look up the pin swap that you mention above. However...he had issues.
More on it with the link to NEP
Need transmission tuning help! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
Pay attention to the dates of the posts as it can become confusing and then ensure you see page 8 where he talked to Dave abotu the pcs being different
03 4T65E slipping in 1st - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
this is all why I suggested swapping the valve body/channel plate in the pm.![]()