Technical SBC 350 with Rochester 4 BRL idles low and dies when coming to a stop

How I'm trying to get my grandpa's old truck running, so far I've rebuilt the trans and carb and put in new spark plugs and ignition cables, also changed fuel pump. The problem I'm having is when coming to a stop the truck idles low then dies. Starts up fine will turn over then after a few taps or gas pedal idles fine

 

Check the floats

 

Also you might check the timing....