The photo you provided showing them from the top makes my idea of trimming the bottom a bad idea. What I see is a foot peg mount that needs to be cut off at the welds and rotated, or new pegs made. The only reason I commented was because I just now finished making some pegs out of 4" 7/8 DOM for my Bonanza project, and it was all fresh in my head. There were precise cuts and measurements, followed by free hand trimming and artistry with an angle grinder and a flap brush.