Greetings all,
        I am replacing exhaust system and one of the muffler carrier
(bracket ) bolts is stuck in the rear aluminum engine mount. I have
hammered on it but it is not budging (the nut is already off ). I am
going to take off the mount and try and press it out with a vise. I
don't want to hammer it any more because I'm afraid the aluminum will
break. Any other ideas out there?  PB blaster has been ineffective
and am leery of using much heat on that aluminum.
Thanks.
Rick