[Spridgets] brakes

[Jess Power]

I am sooo frustrated.A while back I posted that I was having trouble  
bleeding the brakes on my 1959 bugeye.I have nearly completed the  
resto and STILL cannot get the brakes to work.I realized today that  
the previous owner had the brake reservoir connected to the clutch  
slave and the clutch reservoir connected to the 4 way brake  
connection.I switched these,bench bled both the clutch and the brake  
master cylinders and tried once more to bleed the brakes.Nada,no  
bubbles,nofluid,nothing.I am guessing I have dirt in the lines and/or  
a bad master cylinder?I have been bleeding the left rear,right  
rear,left front,right front.What's next?