Re: how do you focus you aixiz housing??
If you have big fingers like me, i found that to make it easier, i cut a lead off of an LED (or pin , etc) , heat it up with soldering iron, and push it into the black plastic VERY CAREFULLY not to touch the lens. Then trim it so you have a little rod to actually grab onto. You can use those push pins with the plastic round head if you want to make it even nicer.