 If we put air pressure in the cylinder, they seal up. We're like, okay, I don't hear anything. And then we crank it over, and the compression's gone. It won't run. Then we put air in there again, and they seal up, and then nothing. And the carbon and the valve being tulipped out a little bit is causing the problem, and it's just a steel issue they're having, some of these new ones. So what I'm saying is your leak down test may work in some cases, but maybe not in this one. And this, since it's just those two cylinders, probably not a timing chain issue or anything?