still leaking

My Supra is back at the dealer, they are clueless on what could be causing the leak. They figured out the leak was not from the EGR, there is not much left. I am beginning to think the crankshaft is bent and is creating a vibration making the main seals leak. It is better than the ideal of the kami of Toyoda-sanma in my car. The car did vibrate at high speed operation. Well they got the Supra back again on the back of a tow truck. These guys are clueless