Okay, I did a little video of the Surge rattle effect. Its over a minute long, so you may want to drink some strong coffee in order to stay awake until the end.
Bob, your SURGE rattles a lot more than any of my older ones! Maybe yours is defective or something!
Hmm, that's quite odd. They rattle a lot more than any of mine then..
Near the start of this thread, he mentioned that it could be fixed by just pinching the holding part a little tighter I think...