make sure you plug is good, make sure the reeds are good clean your carb out and have a check of the basics first but from the sounds of it its leaning out, when i first started mine it would idle but as soon as you revved it it would die, i turned the air screw in 1/8 of a turn increments until it would rev, then i turned it in another 1/8th it needs a bigger pilot but its running now. the air screw is the small, one at the back of the carb nearer the air filter side. i dont think stock blaster carbs come with idle adjustment on the body of the carb, unless they have been modified for the tors delete, if it still has the tors in tact the idle adjustment is on the tors unit above the carb.
just make sure its the idle screw your turning, because if you have been turning the airscrew you may have upset the mixture hence your running issues.
if i were you id check these first and then probably do a plug chop to make sure your not running that bad boy 240 kit lean, because that would realy spoil the fun sooner or later.
pictures will help us identify your carb and then we can give tips on hbow to get it going a bit better hopefully.
well done with the purchase, looking forward to the pics.I:I