Thanks for the PM, I will probably take your advice and replace the servo's anyway. I'm at that point with my DF4. They work ok, but I've noticed lately that the bird is starting to get twitchy, even when I'm sitting there at a stable hover. A couple of times, the aircraft has simply moved off on it's own and crashed. Luckily nothing too major as I have been able to kill the throttle before impact (which I hear is not something to do with a CCPM model).
I've only been doing the RC thing since last fall so I'm still pretty new too it. These forums are great places to soak up info and people like you who continue to post good info will keep me coming back for ideas.
The only bad thing about this sport is that it can get pricey... Also the wait in between destructive crashes is way too long... it would be nice if I could go down the the local hobby shop and pick up walkera parts... oh well, it won't be long... China is probably figuring out how to buy up real estate here...