hi, i bought a neon bb a little white ago ( square ) and noticed that when my cranks are fully on there is quite a big gap between the frame and the crank, so i left it be and got on. Today changing a puncture a mate of mine noticed there was a big chunk out of my frame where it has rubbed, so put the bike all back together and could see it was defo the chain that had done the damage. So later i checked on my mate mat's bike ( who got a neon bb a few week's afater me ) his has done the same but not to the same degree as i ride my bike a lot further than him. Im am using a bionic b2 and mat's using a 08 GU. we're not sure what to do but we think some weld put in it would do the trick, has anyone else had this problem, and do you think it's our bb help us please thanks guy's