I've been using the Screwdriver for a couple of days (after trying Prof Beard's) and I'm very impressed, so impressed I ordered another one.
Unfortunately my SD has stopped working

. I've taken it apart and compared it to the new one I've bought and it would appear that the spring that is compressed by the +ve end of the battery has failed so when I press the button the battery does not make contact with the atomiser. The spring appears to be totally compressed and will not release.
The atomiser and battery are fine.
Any suggestions on how to cure this, but more importantly - is this a common problem?
I'm so glad I bought a spare one though - just a bit worried if this one packs up as well.