I have 3 tube mods which I believe came from china. The store that sold them to me doesn't fix them. All three are exactly alike with broken switches. I took one switch apart hoping that I might be able to figure out how to fix it but I have almost no experience so I have a proposition to make. If any good modder can fix the three, he/she can keep 2 and send me back just one. Anyone wanting to take on this challenge can PM me or email me at Lili1026@gmail.com. Thanks