Andy is right.

If the plane flies well after it gets airspeed, anything you do to correct a launching problem will lead to in-flight problems.

Just launch it in a pronounced right bank.

I've had some that took around 45 degrees for a good launch.

One more thing, with a banked launch you also have to toss the plane upward instead of level. Again, experiment for amount. Usually about ten degrees up is fine.

Bill.