hey

i would try closing your bottom about 1/4 turn then try again. if its idling good then flooding that could be it. and i would get at least 8 to 10 tanks before going full throttle. you will know when your engine is run in. it should start easy and straight away. if you have fuel coming through your stinger you could be flooded, definitely if its back firing.

now turning your needles to close should be a very delicate exersize. you should stop as soon as you get slight resistance. dont push it you can stuff up the carb.

the other thing is be patient. its taken me just over a month to break in my hyper 21 and today i just worked out how to tune it better.
the other thing is not to tune your engine till its warmed up. your engine will react differently when its warm. lick your finger and slide it on the cylinder head (dont burn your finger ) THE SPIT SHOULD BOIL OFF IN ABOUT 3 TO 4 SECONDS that is when you are running the right temp. if it dosent boil off like that after a few laps up and down the street then its running too rich, if on the other hand it bubbles off in a second or two then its too lean.
its all part of the fun of getting to know your car. take time , go slow, you will be thankful you did. best of luck