I have read Baditudes post on mech mod safety. I am into my regulated devices and I will not be using a mech until I have a dmm. I want to just have one to hand for occasional use. I know a machinist and apart from every precaution which I will take, I wonder if you or any other veterans still agree that drilling vent holes into the top of the mod (where the battery meets the 510 connection) is a safe procedure and will reduce the risk of a violently venting battery. Thanks guys