At leas you are able to return it for a refund. It is hard to find a seller on E-Bay that takes returns like that. Nice blaster though. Welcome to FISD.
I also got rid of the chin strap. I added Echo's fan kit and tacked with E6000 the star foam. Im probably gonna ditch the star foam and go with the adhesive backed foam blocks i bought here. I love my TM bucket, have fun with it.
If you feel the need to use ZapaGap/ZipKicker, TrooperBay has some great videos on YouTube. My buddy and I have watched them a few times each. Great slow tutorials.
Ken