I have had mine for 2 months and experienced the same. I was looking for a back up. I looked at all the options 79.00-129.00. I finally pulled the trigger and just now ordered the Provari. I can not see spending 79. or 99.00 on something I am not sure of. I have the charger and batteries,so I ordered the grey,red led and got the 18650 Ext cap. I think their 1 year warrany and that they will fix the device,is what sold me. I had heard so much hype on the Vamo and do love the way it functions,BUT the thread issue is a deal breaker. I have treated it gently since I got it,but 2 months and thread ware??