It's not even the cross-chaining. Luckily, I can get the ratios and that's fine. It's that the chain is hooking up on the ring next to it and getting ripped up while the derailleur's still in the other position. I was seeing how far I could push it on the way home and in the least offending cog it'll just make a slight tick at normal riding torque - jump out of the saddle thogh for a sudden sprint and it all goes to hell as the drivetrain flexes. I don't care if I'm rubbing the derailleur (if there's no solution I'll have to get drastic w/ the limit screws) but inadvertently hooking up on the big ring would be hell in a race. If possible, I'd like to be able to have more than 6 usable gears in the back + small ring, so that's the ultimate goal.