I bought some clearomizers from TW and I really like these things. Problem is glass isnt as fragile so I had to re-tube them. Now Id like to know how long these things usually last after they have been re-tubed or if someone has never had them crack. Ive had them for a month but I have not used them for a month because I was so scared to. Then I re-tubed them. Id actually like to purchase more of these things and re tube them if the life span is good. 