[Bmcu] surface TR3 exhaust manifold?

[Jeremiah Curry]

Howdy all,
 
I am getting ready to put the exhaust manifold back on my TR3, it has been
off for 29 years and the head has been rebuilt.  A friend of mine told me I
should have the exhaust manifold surfaced before re-assembling.  It is not
rusted, but not perfectly clean either.  What are your thoughts? how much
can the gasket cover up?
 
If you think I should get it done, do you have a place in Salt Lake City
that could do it well?
 
thanks in advance,
Jeremiah

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