Anyone done any airbox mods to their 'Stroms? I have a K&N filter and want to do something to help it breath a bit better when I install the filter. I've done airbox mods to many of my previous bikes with excellent results. I'll probably remove the snorkle and maybe drill a few holes in the top of the box, but would like an opinion from somebody who has done this about what they would do and would not do. Was it worth it?