I see what you are saying about the axle being to loose. In fact, a few people in previous threads told others to go out and get some higher quality axles/nuts. As for me, I want my SS to be absolutely trouble free so I have decided that chain tugs will be the way to go if this happens one more time. The only reason why I would go with two chain tugs is because for the most part, they come in pairs. The only ones that I have seen as a single were the NJS and Surly Tuggnut ones. It is funny because they give you half of what others are selling and charge twice as much! I have no doubt that these are of a higher quality, but at the same time I cannot imagine spending that much on such a simple device.