we got a blaster in the shop today and were told it was leaking gas and didnt run right, so we figured it was a float sticking causing it to foul plugs. so i rebuilt the carb new jets needle and seat the whole deal. well i got it all put back together and it will rev perfectly until its under a load it will just sputter and not gain rpm's, the plug is not fouled the reeds are fine the filter is clean float heigth is correct exhaust port is clear pipe is not plugged it doesnt have a parking brake switch, its not the tors i disconected it and still just boggs under a load. i am at a loss im am completly out of ideas. i was wondering if anyone has any suggestions as to what it could possibly be i would greatly appreciate it.