Can't imagine why not. Just don't touch any cap inside once you open it.
Really, it bothers you that much?
Hahaha, don't know about him but the ocd part of me twitches uncontrollably every time I see it.
Do educate me, why shouldn't you touch the caps?
Are those with the GZ37 big bottle or slim bottles?
I'm burning in a pair of Sylvania 6FD7s, will the midrange ever open up on these? Everything else about these tubes is gravy(very fast and dynamic).