Does Bachmann sell traction wheels for a 2-6-0 and a 0-6-0???
I'm not sure if they do, but, I had GREAT luck with Bullfrog Snot on my Spectrum Richmond 4-4-0! I mean, it had ZERO traction, and no groove for a traction tire, but the snot did the trick, without any interruption to my connections. I did all four drive wheels with it (because there are amazing electrical pickups on the tender of that engine) but I think, in the future, I'll probably do only two, if I need to do it again (just to give the engine a bit more in the pickups department, even if the train shop said there were no pickups in the drivers... folks here have educated me otherwise)