Quick rocket launch fix!  A3-4T motor this time and it had a nice smoky rise and then arched over and still smoking on the way down and then ejection charge shot the Birdie down (nice smoke, but ejection was fairly late).  Unfortunately there was a sudden small gust and this sent Birdie into water for a bath.  Retrieved and dried, but centering ring has started de-laminating.  Will need to fix.  Still lots of fun in a nice, simple, small fun package to launch on a whim.