U.S. Model 1896 and Model 1898 Krag actions differ from each other.  Most of their component parts, although similar in appearance, differ and are not intended to interchange.  A Krag, accepted into U.S. service, functioned correctly when it left Springfield.  IMHO, Beachbumbob's Model 1896 Krag probably has some 1898 parts (side-plate and possibly follower & arm) 'contaminating it'.  I'd start the 'problem solving' by replacing the buggered up side-plate with a known 1896 plate.  Detailed pictures of his follower, in relation to side wall opening, and of magazine gate, would help identify whether parts are correct.
  (Attached photo shows some detail of 1898 action.  Cut-off tip is visible at upper right corner of receiver wall opening.  This is the position that allows cartridges to feed.  Follower is 1898 type).

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