Tuning help after tranny upgrade

[tmbarnett1973]

Need some help please. I have a 99 F350 superduty. I recently had my transmission rebuilt by Sam Wyse in northwest Ohio. It is a stage 2 rebuild on a 4r100. Everything else is stock. My computer has the code NVK2. Prior to the rebuild, I always ran the standard files from VRAA6S3. After the rebuild, I used the same tune, except with the modified valve body. Ever since the rebuild, this thing shifts horribly. I have tried several other tuned in the NVK family, but no luck. I usually run the DD 40 to 80 HP. I have tried the tow tune, just dont like that it holds the gears out so long. I regularly pull 20K plus pounds. The torque converter will lock up at about 2000 rpm in 3rd gear, dropping the rpms down to 1500. I increase my speed, and about 2500 rpms, it will unlock, shift, and lock at the same time, causing a very violent shift and shake of the truck. The lock in the middle of 3rd gear is even worse. I really need some help. I have no problem paying for a tune. Just dont want to screw up this expensive tranny, and already killed one carrier bearing. Thanks in advance.