You have PM in that case :)
When it comes to doing the bulbs i'd, personally, do both and keep the old good one as a spare. In your case you only have the one.
Cut springs are fairly easy to tell. When you look at a proper spring the ends will look as if they form a circle (the ends instead of still twisting around in the coil they'll be flattened down). Most times the average "hoon" wont bother with it.