I bought a Phidias about a month ago 2nd hand. I have 2 Ultrafire 18650's and 1 Trustfire 18650. Only one of these batteries will work in the mod, one of Ultrafires. All 3 of them work in my other mods but for some crazy reason the Phidias likes only one of them. I cannot for the life of me figure this out. Anybody got any suggestions?