downpipe nuts

[Kneale Brownson]

What's the secret to getting that last @#$%^%$#@  nut holding the downpipe
on?  You know the one I mean, the one on the underside closest to the
engine.  Even my socket with its own swivel won't fit on it squarely enough
to allow loosening.  I need the downpipe off to get the tranny out to
replace the whining throwout bearing. (and those other wear parts in the
clutching system).