NEVERFASTENOUGH

please help i have a 97 shee i just had the engine redone with a 4m 5m hotrods stroker with hot rods stroker pistons to match and spacer plate i had the cylinders bored to 65.50 mil i also have a mod quad cool head with 18cc domes and v force 3 reeds and pro flo intake boost bottle stock carbs with a 270 main jet i just got the engine together yesterday and im havin a hard time starting it , it wont start till i pour gas into the carb then it will fire up and sounds pretty good but wont idle ive cleaned the carbs and it wont make a difference im trying to break it in right now after i ride it around the yard it wont even idle when its warm so as i let off the gas it stalls out and wont start back up till i pour gas back in the carbs but once i get it running and moving it feels strong no bog or mis but wont idle or start unless i put gas in the carbs this is my first banchee i have tryed every thing i kno if you guys can give me any advice its much appreciated i dont wanna screw this engine up i spent all my savings on it, my riding temps are about 60-80 degrees in the summer and winter 20-50 degrees the guy who sold me the main jets said in the summer juss take the air lid off and keep it on in the winter and it will run fine, it juss seems like it wont get gas but when i pour it in the carbs itll fire and ride perfect it dont make sense ive cleaned the floats and checked my compression 160 pounds in each cylinder thats good right? maybe it needs bigger carbs or timing work im not sure and i also think my cylinders have a stock port job. i juss wanna get it running right so i can go kick sum 4 stroke ass do u think this machine will scream thanks guys ?

my mistake its a 270 main jet and everything else in the carb is stock im riding in michigan so my riding temps r from 25 degrees being the coldest ill ride in the winter and summer 60-80 degrees my mechanic said with the 270 main it would run good i would juss have to take the lid of the airbox in the summer and keep it on in the winter so do u guys think i should change the main jet cuz it wont even start till i pour gas in it then it fires right up and runs pretty good but wont idle

please help i have a 97 shee i just had the engine redone with a 4m 5m hotrods stroker with hot rods stroker pistons to match and spacer plate i had the cylinders bored to 65.50 mil i also have a mod quad cool head with 19cc domes and v force 3 reeds and pro flo intake boost bottle stock carbs with a 280 main jet i just got the engine together yesterday and im havin a hard time starting it , it wont start till i pour gas into the carb then it will fire up and sounds pretty good but wont idle ive cleaned the carbs and it wont make a difference im trying to break it in right now after i ride it around the yard it will idle for about a minute and shuts down this is my first banchee i have tryed every thing i kno if you guys can give me any advice its much appreciated i dont wanna screw this engine up i spent all my savings on it, maybe it needs bigger carbs or timing work im not sure and i also think my cylinders have a stock port job. i juss wanna get it running right so i can go kick sum 4 stroke ass do u think this machine will scream thanks guys