set up problems

I have a rick santos 391 sbc with a hampton 8-71 super2 blower on alcohol,@4% overdrive. enderly sent me a 80-1 pump,their hat injection w/#48 nozzels, barrel valve is set @ 65%, .070 main jet . have a promag 12 set @ 26 degrees timming.
will idle for 2 to 3 min. then pops & shuts off like its out of fuel. trying to fig. if its lean or promag box is bad. any ideas? this is my first try with super charged alcohol motor.

thanks

 

mine done the same thing they sent me a loop line for the pump and it had a return line run back to the tank and was sucking air

 

set up

enderly said not to use loop on my set up

thanks