RE: losi 8t rtr question
Things will work out for you I'm sure. I have the 8ight-t as well. Its not the rtr now, but it started as a RTR roller.
As far a bump boxes go...........so much better than a roto start!!!. You just need good batteries. I use 2 3300mah nimh batteries in mine. As far as the wheel goes you shouldn't have worn it down that quick. It sounds like your starting problem could have potentially been a glow plug failure.
Good luck with it.