I bought my truck with this "built" tranny... built for supposedly 8-850 hp. The snap at each gear is somewhat annoying.. alleviated somewhat.. if I guestimate when it's going to shift and back off the throttle for a softer shift. What can I do about this? Find another tranny and have it built to better suit my needs? Adjust this one somehow? Let me know... please.

Talk to Dynamic about building you a VB that is less harsh

So.. it's mostly in the valve body? Does the triple disc play a part as well?

Triple disc plays somewhat of a role, but shifting harshness and lockup harshness can be set in the VB

There is a dump port on thee valve body that dumps the pressure to lock up the clutch. So if th port is too big then it dumps too quickly. Dynamic should have a custom valve body plate you can replace yours with.