not really that I'm "concerned" with my nuts not biting the dropout...It's really hard to explain...I guess you need to have the MKS tugs to understand...the serrated portion of the nut sits at an angle to the dropout and never makes contact with the dropout because the washer on the chain tug kinda, half assedly fits "inside" the serrated part of the nut. Thanks for all the replies too guys..I guess I'll leave it the way it is for now.