Hi, I recently bought a second hand set of ap2 712's and noticed on most of the clubs that the leading edge and satin finish on bottom of club are very worn and bottom of club has a glossy appearance now instead of new satin look. I'm just wondering is this normal for the 712 ap2's with normal use or did the previously owner alter or damage or grind down the clubs in any way ? Anyone with previous experiences, I would appreciate a comment. Thanks