Hey guys, I'm getting rather frustrated with my ************************ing cranks, they keep coming loose. It's only the left side crank arm that is coming loose. I've taken it off, checked for rounded edges and so on, wacked it back on, and tightened it to buggeroo, I'm not weak so thats rather bloody tight, and it still comes off, I mean, wtf? Loctite? Will that really make ALL the difference help please.