Never been much of a mech I'm afraid so this question is likely to be elementary to most of you. The product description at NewBonneville.com says something like changing the number of teeth on the front sprocket will "help resist the urge to look for that elusive 6th gear on the highway". I have a 17 tooth bumped up from stock 16. If I want to get rid of that "inclination" to search for the 6th gear do I want to go up to 18 or 19 or drop back down to a 16 or 15 tooth? The whole ratios discussion is lost on me. Appreciate the help.