My wife is having hell with her older Precise 10440. Sometimes it works, sometimes it won't. When it fires it seems real weak also. I've cleaned the contacts and checked voltage where the atomizer connects. I've also checked the atomizer with an ohm meter. I'm wondering if these TrustFire protected 10440s are cutting off trying supply enough current for the 1.5 ohm LR atomizer. Anyone ran into this problem?