I have heard of people running dual ring gods as a chain guide for urban bikes. I am very interested in doing this, but before i go ordering two bash gaurds, i was just wondering how do you do this as there is only room for one bash gaurd and one chain ring on a crank spider. do you just mount one on the inside of the chainring? will the bolts reach, or be really weak? I have azonic 3-pc cranks, so i can move them to the right to make room. that's one thing i have figured out. any help, thanks