Reaching out with a question for my dad. He has a 325 New Idea corn husker but the husking unit is a 327. 

Does anyone know how to replace the wooden plugs and husking pegs in a New Idea N.327 husking unit? Hes searched everywhere for an answer on this one, and hasnt been able to find anything. He can find parts to replace them, but isnt sure how to go about actually replacing them. Anyone have experience with this?