As the title says this was a standard performance 2004r that was rebuilt by a local trans shop and lasted a few thousand miles in a GN with approx 520/550 hp/tq. It started having 1-2-3 delayed shifting in manual and some flare in 2nd at wot. Fresh fluid and a shim in the servo improved the operation but not completely so I have removed it and tore it down to inspect and repair. Here is what I have learned. Non lock valve for PTC 9.5 Transgo HD2 kit using dual feed bushing, all kit modifications appear to done per the instructions. Rebuilt valve body ? Heat treated forward hub OD piston for 3 clutch pack 8 clutch pack direct 6 clutch pack forward Wide HD red band Standard weight governor 2 of the OD frictions have some dark burn marks and spots of blue on steels Direct clutch pack looks good but has at least 0.126 clearance to the snap ring Forward clutch pack looks good but has at least 0.075 clearance to the snap ring I did take pressure checks before removing the trans and they were reading good with max TV at 240psi My goal is to repair and improve this transmission. I have a BRF valve body and governor and plan to reprogram it along with replacing the thin steel 8 clutch pack with a set up from Bison. I am concerned with the possible problems I might have with the TG dual feed and reprogramming the VB? Looking for good input please!