DKW

Talk about frustrating. She ran perfect for a few weeks after carb rebuild and then....noticed some overflow on top of motor from carb. Pulled it apart and checked float and needle. Checked jets while I was in there and all seemed fine. After all they are brand new. Reinstalled. Seams to starve for fuel at idol. Revs up as it leans out then dies. Keeping it running with throttle she spits sputters and pops. Also a little black smoke like before the carb rebuild. Fuel pump and vacuum line are fine. I'm at a loss. Smh..