If you tighten them properly, they won't get loose and don't need loctite. The reason they were getting loose was that they were not being tightened properly due to the nuts turning w/o being restrained by a nut tool as I showed here >>>
http://www.parktool.com/products/det...=26&item=CNW-2 When you tighten a bolt and nut sufficiently to attain proper preload tension, the connection will not loosen. Loctite is primarily beneficial when high torque cannot be used, such as when threading a steel bolt into an aluminum part.