Same problem here, except with Campy Atlantas. Broken nail, bleeding fingers, lots of swearing. I tried baby powder on one rim, 409 on the other. Finally mounted both tires WITH someone helping, but tubes pinched somehow. My Park levers held up, though.

An entire build is on pause right now because I'm too frustrated with these rims/tires. I just made a few large orders, so I don't want to spring for a new tool.