[Harp-L] Replacing MB nails with screws

["Splash!" <celtiac@xxxxxxxxx>]

I'm gearing up my workbench for Harp repair.  I believe the choice of screws 
is 0-80.  I plan to use Stainless 0-80 x 7/16" with hex nuts on the 
coverplates.  0-80 x 3/8" Brass for the reedplates tapped on the draw 
reedplate.  3/64 drill for the tap and 5/64 drill for the Blow reedplate.

Now the question:  Looking at the MB reedplates, Blow reedplate has 7 nails 
(holes) and Draw reedplate has 6 nails (holes).  I believe that the two 
machine screws on each side of the coverplates will suffice for the two 
small nails just inside on the reedplates.  But I am unsure of where to 
drill for the other brass screws for best airtight performance.  I see my 
Lee Oskar harp has a screw right on one of the middle teeth of the comb. 
The Blues Harp MS has only two screws on the reedplates.

Suggestions where to drill and tap ?

Splash!