I'd like to help, but my blade CPPPro "wants to lose control" too. That's why I have to keep flying it...
What is your experience level?
I put a basic setup in a nutshell over on the BCPP thread, it applies to the BCP too, don't know if that's what you mean by "adjust your trims"...
For a normal takeoff with the stock transmitter and a well-setup helicopter you should not need any trim at first, depending on a lot of things...
(I mean all transmitter trims set neutral/centered, except for throttle trim which should be set low)

If you can give more details about your problem someone might be able to help more.