Fenn:  Welcome and G'dday to the KCA forum!  I'm sorry your bore did not clean up real nice.  For a Match Rifle, your best bet would probably be a Criterion (Krag) barrel.  The second hole in the butt stock was for lightening purposes.  Your rifle, #305,953, was likely built around February 1901.  A correct fitting side plate screw usually stays put.  I have not found the 1902 sight to be particularly fragile.  However, careless storage and shipping probably took its toll, as evidenced by this 1912 photo detail (at Kemper Military School, with 4 out of 5 knobs missing).  You can get small sight parts from S&S Firearms, Glendale, N.Y.  Their catalog is viewable online.  However, you might be further ahead getting parts or a complete sight from one of the Gentlemen selling parts in the KCA Classifieds.

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