Originally Posted by Retem
then your over tightening them if you are afraid of dropout slippage just get a chain tug bmx ones work just as good as the "track specific" ones
+1, because of overtorquing due to fear of slippage, I broke two locknuts and two axle nuts in my first 3 weeks of fixed riding, got a tuggnut (and modified it for horizontal dropouts) and never had a problem after that.