I doubt if they will fall down or split (but I have yet to find out!) as they are very tight on the shrouds and quite wide. I could make them even tighter but they haven't moved a millimeter so far. As for splitting, you could always use a thicker peiece of plate, if you wanted to. I just happened to have this bit lying around. Also, due to the thickness (or thinness), they blend in so well, you can hardly see the join. They would have blended better if I hadn't already polished out some of the brushed effect of the shrouds.
For what it cost me (less than a fiver) I'm prepared to take the risk as I hated the lights on the bars.
