Got my T5M built Friday and raced it Friday and Sunday. Its great, no issues. Unlike my normal routine, I built it box stock side from a gear diff and I don't have any immediate plans to do anything else. Its really good out of the box just like the B5 and B5M. If you ask me, the truck needs nothing. We run stadium truck as an unlimited class so weight is not an issue. I'm running a hobbywing v3.1 & D4 13.5 maxzilla. It was very stable and held the track very well. I'm super happy.