depends on the headlamp / screen subframe
get it on its centre stand and look from below - some bikes have the metal bracket to fix things too so they don't float about (if you have this type drill pilot from beneath to get this right)
my 2007 GS just has the big rectangular cut out on the subframe (for the power sockets to clear) and so my winglets sit mid way within the cut out and flex a bit with the plastic body work, I used large washers beneath the bodywork. later bikes mounted the winglet on better designed rubber mounts so it doesn't crack round the holes.... this mod can be retrofitted to all (and should be), buy the later stainless ferrells and larger rubber bushes and just open out the hole on the old style winglet to suit the later bush