Rear brake bridge question
 

My frame has a squared off brazed on in the rear brake bridge like the one below (not my frame, but similar). It's drilled for nutted calipers, but the rear caliper I'm using has rounded washers to accommodate a round rear brake bridge. Do. I need different hardware, or do I just not use the rounded washers?

http://2.bp.blogspot.com/-4Id_7d6bvy...0/DSC_1916.jpg

I would substitute the dished washers for standard flats. Use the star washers to held them steady.