As you're looking at the bike from behind, your derailer pulleys are lined up slightly to the right of the center of each cog. In this position you'll get a clean shift to the left towards bigger cogs, but as it moves to the right towards smaller, the chain wants to skip too far right to the next smaller cog.
What you want to do is get the chain/derailer/pulleys under the middle cog, then adjust until everything is directly lined up, or possibly even slightly biased to the left. If your derailer has an adjuster thingy where the cable enters derailer, turn it counterclockwise to slightly budge those pulleys leftward. If not you'll need to mess with the cable anchor until you have things where you need them. Hopefully this all makes sense. Good luck! -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.