True but bead locks you should be able to mount yourself, then you could use some sort of dynamic balancer to take care of the balancing for you!
I just did them myself and didn't bother trying to balance them.
![Gap :gap:](https://board.marlincrawler.com/Smileys/marlin/gap.gif)
I have heard that 4Wheel Parts will balance 40s if you use a set of Staun (sp?) internal beadlocks.
![I Dunno... :dunno:](https://board.marlincrawler.com/Smileys/marlin/dunno.gif)