Thanks Ross.  I had a little trouble cutting the wedges just right so the would not stick out too much or fall though too much.  Finally, it penetrated my thick skull that cutting the wedges really long but at the correct angle would make it easy.  Test fit, mark to length, cut, and yes, by all means round over the tops.  Agreed, the tops could use some sculpting for a better hand hold.

Huh? Whadaya mean it ain't "measure once cut twice"?