I've had my sigelei 8 for about two months now and have been irritated beyond belief at the voltage drop I've been getting due to the chrome plated switch. Well today I finally got the darn switch Housing apart and was able to sand down everything that needed it and all I can say is there's the biggest improvement ever. Ramp up time on my 1ohm micro coil is almost instant. Like I said im happier than ever, damn you sigelei for thread locking it so well but yeah I'm just ranting now.