[TR] TR3A Overheating

[D&B Lambert]

All,
Just to got home from Triumphest.  Had a great time.  Now for the question:
For the first time in 12 years my TR3A overheated on a couple of the grades
going south out of Las Vegas.  I finally had to stop in Hesperia for an hour
to let things cool down.  Yes, it was hot, and I was pushing pretty hard,
but it's never been a problem before.  I'm imagining that the radiator must
be getting crudded up.  It's an original radiator, still with the crank
hole, and was rodded about 10 years ago.   I'm thinking it's finally time to
replace it.  My choices are: 1) getting the original re-rodded, 2) having a
local radiator shop install a modern core, or 3) buying a new aluminum
radiator from one of the big three.  Keeping the crank hole is not important
for me; the only use I have had for it was to use the crank when adjusting
the valves (for that it's pretty handy).  I have no experience, but have
been told by more than one person that the repro's from the usual suspects
are not, um, exactly great.  Is that true?
I know we've already had the copper vs aluminum debate (once or twice), so
I'm not trying to start that discussion here - I'm looking for "been there,
done that" stories.  I need some help making up my mind which way to go.
Thanks, Dennis