Ihave a Parkzone P47 and i installed flaps do i need to add some elevater mix the it

Fly it and see if it needs elevator mix. if so, your "hand mixer" will work pretty well.

deploy flaps too fast and any airplane will balloon up on you....Flaps job is to increase the curvature of the wing so you can produce more lift at slower airspeeds....

Try it and see.

I don't think I have any mix on mine, read the review in the magazine section I'm pretty sure I covered that.