One more thing. Never allow the original, or oversized rivet holes to interfere with any holder replacement positioning. When switching holder designs, stepping up in length, etc., holes will seldom line up. Many times holes will be 'close' and require some reaming. This can cause weakness, using COPPER rivets, or installing rivets that seat on an angle. Use a products that can FILL the old holes. Very easily done and stronger than steel, when applied with care. These products come from your hardware store. You slice off a thin piece (off the roll of material) and roll it around in your fingers to 'mix' it. The material is IMMEDIATELY worked into the rivet holes and smoothed out. You have about 2 minutes (tops) to do this, Within a few minutes the stuff is PERMANENTLY in there and ready to drill. When pressed in, worked and smoothed and blended into the skate soleplate, it is smooth, flush and stronger than the soleplate. I call this a 'fill and drill'. I have to charge for this (charge by the hole), but it WORKS flawlessly.