QFT 750 slayer float issues

[rigger3006]

i ran 340 duster out of fuel bringing engine up to operating temp for some tuning, put more gas in tank and tried to fire it up, it wouldnt catch so i hopped out to check for fuel, i could see and hear fuel pouring out of rear nozzles. i got it going again after awhile and got front floats set but as soon as i attempt to set rear floats it floods engine as soon as i undo nut on top of float bowl. carb is brand new and was fine until i ran out of fuel

 

[n.y.340 dart]

It sounds like something is stuck in the rear needle and seat.

 

[rigger3006]

thats what i thought, took off rear bowl, there was actually a little bit of grit inside, cleaned it up and reassembled it, now sight glass is full and im not sure how to lower the level because of the instant flooding.