We found a perfect cutting board to go onto the stove top of the Seaward
  Hillerange Model 2172 stove that came with our 1994 Catalina 320. It is a
  Bisetti Walnut cutting board. If the
  front bracket wasn't on the stove top, this would drop right in. However, we
  needed to pry the Bisetti logo off the front (it is a friction fit into two
  holes, so comes right off), then sand it down where the bracket and screws on
  the side goes. Then we applied some
  food grade mineral oil. It is a
  beautiful addition to the galley. The board has two sides, one with a groove,
  and either side can be up.
  To hold the board perfectly level, we added two brackets to the lower screw on
  each side of the front fiddle. These are
  Everbilt 547 475
  one inch stainless steel corner brackets. We lightly filed the corner so it
  wasn't knife sharp.
  
    
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      | Cutting board | 
  
  
    
      |   | 
    
      | Corner that had to be sanded down | 
  
  
    
      |   | 
    
      | L Bracket to hold up edge |