George:

Launched in a bank, the airplane will circle a bit before it steadies into the climb. With the plane banked the effective wing area, or projected area, will be less than it will be in level flight. Combine the lower effective area with the low initial air speed, the plane will sink more, at the same angle of attack, until it acellerates.

And the up angle on launch is the "Up elevator" you need to counter the added sink.

You would have figured it out for yourself, and probably already had, before this response.

Bill.