I'm running into some chain/tire issues on my 9zero7. It's running a 1x9 setup right now. In the lowest gear, the upper chain run easily clears the rear tire. But in the lower run through the derailleur, I'm getting some rub. Looks to me like the derailleur, which is Deore XT, maybe doesn't have enough lateral range. I suspect that this dangler isn't that well suited for 1x action, is that a fair assumption? If so, what derailleur should I be looking at?