Did anyone else have this problem when they first got their Flatline tank?

[RT PRO's ROCK]

I got my FLatline today, and when I took it out the reg was making a jingling noise. I thought something was wrong with it! Did anyone else ever have this trouble?

[Cobrachs]

Yes, mine made the same noise, in fact it still does and has worked great for the past 3 months

[paint_thrower68]

Don't worry about it, I believe it is the on/off assembly.

[BlackVCG]

There's a small ball bearing in there that acts as a check valve. All Flatlines have it and they will all rattle.