Hello ppl, I've just received my new 600w digital ballast, all seems good, packaged well etc but I can hear something move in there as I move it around, sounds like a loose screw maybe. I've never bought one before so wasnt sure if was a big worry. Its gonna take me a couple weeks to send off and replace I'd imagine, so what I'm wondering is, If it all seems to be working well should i just crack on and am I overthinking it or is it worth waiting to swap? Thanks