It looks like the X Squared glasses are self serviceable. Self serviceable as in easy to take apart if the bridge or flex couplers have issues. All i would need are the correct screwdriver and coupler or nose bridge. i have a pair of Juliet’s and i had to send them to Oakley for a tune up. i am looking for X metal frames that i can fix myself. Besides the X Squared which other ones are an easy repair?