If something is obviously working for you, and someone tells you to change it...they do not have your best interest in mind. If something stops working, even if it was working before...it is no longer working, and should be changed. I wouldn't put words in your mouth man, so anything I said was intended as a total generality. You're right about there being a lot of variables..too many in fact, so I try and put things into two categories...shit that works, and shit that doesn't. My general thought is, unless someone's paycheck or ego depends on my success, then their information is met with a small amount of skepticism.