Quote Originally Posted by aicabsolut View Post
Are you in those gear combos at any other time? If so, do you get the same problem happening? It could be more of a cross chain / chainline issue than something that would manifest under load. But it may get worse under load, if you use those gears on flatter ground. I don't know why it'd go away, though. Hmm. Do you get any front derailleur rub?
No, no front derailleur rub at all. I normally use only the middle front ring on my MTB unless the terrain gets really steep, and I was not aware that any gear in back was considered cross-chaining when used with the middle crank of a triple. Perhaps I should be shifting to the larger ring in back when using the smallest cogs in back? I only use those smaller cogs for descending and on the flats. The riding I do is very rolling, so it's much easier to stay in the middle cog all the way than try to go back and forth in the front for short distances, but if that is what is causing the problem, I can definitely give it a try.

Thanks!