So I strung this weekend for a junior sectional/regional tournament. A buddy of mine who owns a pro shop/tennis complex asked if I could help him with the load. At one point, there were 3 of us stringing and barely keeping up. Anyway, he had me on an old machine, the body of this Neos had definitely seen its better days. After a long day stringing on it, we went for beers. I told him that while the machine body was worn out, the clamps on the machine were tip top. He said they were new clamps. Well, it's only been 18 years and who knows how many frames, but I decided to buy myself a new set of clamps. I called Tennis Machines this morning to order them. For all you long time Neosers out there, pay attention. I was talking to either JC or the "new guy" and said I wanted some new clamps. He said no problem and I asked how much they were. They are still, $65/each. I say still because they've been that price for about 100 years. I told him on one main on multiple frames, I noticed more drawback than usual. He explained that the glide bars are made of stainles steel, but the clamps are made out of aluminum. What most folks don't know is that while the clamp mechanism and teeth may not wear out, the bottom of the clamp will because aluminum is just not as hard as steel. That was my first "AHA". I then told him that I had purchased some cleaning stones. And asked him if they were OK. He said he used a coarse sandpaper so they were probably the same thing. He did caution me though. When cleaning your clamps with this, make sure you go in an up/down direction and not side to side. If you go side to side, you can potentially cause grooves that would then lessen clamping ability. But, for $130 for two new clamps, I ain't complaining!