Now, everyone knows that Oompaloompas are like bunnies in that they have an insatiable desire to multiply, and the same can be said with Michigan teams (with all due respect) which are currently multiplying and filling that hand-shaped democratic kingdom with their honorable number. - Eugenia Gabrielov [more]
SW simulation express isn't the right tool for this.
If you're concerned that your cantilevered wheels are too weak, you can just add an additional plate on the inside with another bearing. It's likely worth the extra .5 pounds, rather than having the panic of replacing a wheel/bearing between elimination rounds.
Thanks Jared. I agree with your points 100%. A second plate wouldn't certainly help.