GOT IT!
Well, thanks to all of you for your great advice, here's how we approached
it.

Strip out 3/16" internal hex head as expected.
Fit a 3/16" EZ out into the plug and we found that it bottomed out in the
plug without gripping the sides.
Ground about 1/4" off of the EZ out so it wouldn't bottom out and fit snug.
Heat the dog **** out of the case with a propane torch and an electric heat
gun, being sure to keep the heat moving and not burning the paint.
Tapped the EZout into the plug.
The EZ out I used had a 1/2" hex head, so we used a socket and ratchet to
turn the EZ out. This helped us keep it square and apply pressure against
it, driving it into the plug. As it tightened, we removed the socket,
tapped the EZout in further, applied more heat, turned the EZ out a little
more, more tapping, more heating, more turning slightly, more tapping....
finally we "thought" that something was giving... but we didn't know if it
was the EZout or the plug, OR if the exterior portion of the plug had began
to split! nope, I swear I saw the plug turn... ever so slightly... keep
turning...

YEP! bingo! Didn't have to drill... didn't have to pull the prop and the
ring gear... whew!

Thanks again for everybody's advice.

Jim

"zatatime" wrote in message
news
On Thu, 9 Nov 2006 11:55:16 -0600, "Jim Burns"
wrote:

Well, tonight I'll finish cleaning up the install of the wiring harnesses,
EGT, & CHT probes and tackle the oil galley plug.

I've already warned my A&P that he'll be expected to lead the way... and
he's already warned me that it might not be a pleasant path.

I'll report back with news of our adventure.

Thanks for all the great advice, I'm sure that we'll put more than a
little
of it to use this evening.

Jim

Good luck Jim.

z