Steve, if I were you this is what I'd do...
Instead of working on getting the launch down (which may take you a long time to do... it did for me on drag radials) start by launching at idle next time, but run with altered shift points. Make your first run shifting at say 5500, then 5750, then 6000 and see what happens to the 1/8th and 1/4 ET and MPH. Learn what shift point yields the best for you, once you know that THEN start working on the launch. This will make your time at the track more useful and should help you get quicker faster. Don't be afraid to shift it at 6250 if the car keeps getting faster. Also, run the car as cold as possible. The cooler it is the faster you will run, trust me. Make sure you shallow stage too, meaning pull forward only far enough to just trip the second stage beams, this can be worth a few hundreths as you get about a 6" head start before your time starts when the back of the wheel breaks the beam. HAVE FUN! You WILL get faster with more trips to the track.