Did I miss something?

I just changed my 70 duster drums to a 73 duster set-up. All went fairly well until I took it down the road. My front tires are squealing, seems the calipers are holding on. The calipers, pads, UBJ, LBJ, and flex lines are all new. Is it possible the master cyl is wrong not allowing enough fluid back out of the calipers? I was hoping to take it to Thanksgiving supper tomorrow but that's a no go. Any suggestions would be great, thanks in advance.