Just don't do anything stupid with them and you will be finecheers guys ,now i will be able to sleep tonight
what are they supposed to have bubbles or not..You should fill ALL cylinders slowly...it's just polite.
Flash filling, is like going in "dry" and without consent, on your Mrs...Really Stupid.
Only thing I recommend with Stako's, is to dump it in water, with a good amount of air in and look for a continuous stream of bubbles.