I am having issues where my crank is clipping the frame on the new model frames. I owned a SB 4.5 and 5.5 without this issue. Both my SB100 and new version SB5, I noticed clipping my crank on my chain stay when under heavy climbing and pressure. I am not sure if it the design or something flexing too much. I am going to take off the boot protector on the crank and see if this helps today. I was curious if others where having issues. I have eagle XX1 on both bikes. I weigh 200 and have a XL frame. It is kind of driving me crazy.