hey guys ive had my hmc 40 for about 3 months now and it just recently started making a very annoying creaking sound when i use the zoom rocker ,and its not just loud enough to hear because of camera audio ,i could hear it today when i was in an auditorium during a very loud musical
any one had any problems like this?
any suggestions for some safe kind of lubricant to use on it?

Mine hasn't started to do that at all, interesting. I'd say you could probably use graphite lubricant. It's dry so it shouldn't get in and interfere with anything. And it's also got great durability and lasts a while.