Just in case anyone is wondering, a new 23 mm Rubino Pro(folding) will mount on a Mavic MA 40 rim much more easily than a year old 25 mm Continental UltraSport(folding) will come off. I had to use two Pedros levers to get the second bead off. And even with that, I struggled quite a bit. The 23 mm tire has a 28 mm tube inside it to boot. And now to go for a test ride. It has been easily 20 years since I've ridden 23 mm tires. Or 100 psi.