I would not recommend doing this as then you would see the holes from the playfield sides. They can be seen on EMs.
Oh yeh 
Ok, need to fit an inside covering then hehehehe.
Do any pins NOT use nails? would be a nicer finish if the rails were glued (removable) in place for a sleak looking finish and no ugly nailheads.
MM.
All EMs and SS with metal side rails have nails except DMDs - adhesive strip.
