I've been working with SIG for about 4 months trying to get a replacement air bottle. The one that came with my new rifle leaks and won't hold air for longer than about an hour or two. Sig support has been responsive to my questions and emails and said they'd send me a new one with exchange of the one that came with the rifle. Been waiting a long time for the replacement and just found out yesterday that they will no longer stock the bottles. Question 1) has anyone else had the leak issue? 2) Can you recommend a 3rd party replacement bottle that will work with the Virtus? This is my first air gun but I'm not new to firearms. Need some rookie help.