If the flywheels is warped to the point that it is causing vibrations in the car upon accelaration, the main bearings would be gone in probably less than 100 miles. I highly doubt that is the issue, however the fact that he would make up some bogus shit like that makes one question his integrity. Dude sounds like a shyster mother fucker. Have someone who knows cars, mainly hondas, check it out with you.