i'm having a problem with the bolt on the crank side of the bottom bracket. it keeps coming loose on me i have taken it all the way off and wiped off the xcesive grease and tryed a few different brands of locktight to keep it in but it keeps coming loose on me, i ride a 2006 kona shred if that makes a difference and i am the only one with this kind of problem, i ahev tried different bolts and washers but no lcuk yet, any suggestions?