I just got my 300TD back from the mechanic after a valve adjustment and he told me to watch and make sure the valve cover was not leaking. I drove it home and had a considerable amount of oil leaking around the valve cover. So I tried tightening the nuts and barely turned it and found two of them are stripped. Other than waiting until Tuesday, is there any thing I can do? He put a new gasket on also. Any help would be Greatly appreciated. Thanks. Eric