Richard wrote:
On 7/27/2012 11:00 AM, Pete Keillor wrote:

I'll probably helicoil
the holes and use a good antiseize if successful. Realistically, if
the boat lasts another 20 years, it'll be somebody else's problem
(I'm 61).
Pete Keillor



But I'd strongly warn against the hammer.
It's highly likely that the threads in the aluminum will be damaged.
Maybe beyond repair...

See his comment above your response ...
--
Snag
Learning keeps
you young !