I believe that the top lever spindle on the L.C. Smith hammerless guns is supported by the counterbored hole in the trigger plate- I will grant you that re-assemblying a Smith requires some know-how as to getting this in proper alignment and then placing the retaining machine screw in battery- but a Smith action being "complicated"-- not much more than a Parker- but less than a AH Fox or Ithaca NID, I believe.

"The field is the touchstone of the man"..