I was a num nut and accidentally broke off a piece of the block when trying to remove the timing chain cover. The bolt was hiding about midway up the cover on the firewall side. I should have been more patient as I was trying to jostle it free. It snapped like a twig. Am I toast or do you think this can be fixed? I am worried that without the pressure of that bolt holding things together in that corner that there will be a big oil leak. The whole purpose for doing this was to fix some seepage from the gasket that had worn down over time.