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Jim, contact APA help desk (tel. 253-620-7400) for APA handout on this
subject.  Before the job starts, it would be a good idea to check with
contractor to make sure that pneumatic fastening equipment has
adjustable depth feature to control driving of nails or staples so the
head or crown is flush with the surface of the sheathing.  Existing
tools can be modified by service reps; and new tools have depth control
feature.  Controlling depth of driving fasteners by adjusting air
pressure doesn't work.
John Rose/APA, Tacoma, WA

James Allen wrote:

>  Earlier this summer there was a thread regarding overdriving nails
> into shear wall sheathing. There was much discussion, but I never saw
> any remedies for after the fact. I now have a building with the roof,
> second floor, and wall sheathing all with approximately 80% of the
> nails overdriven. The depth overdrive varies from 1/16" to 1/8". The
> walls and roof is working very near the maximum and nail spacing is
> specified to be 4" cc at the panel edges, therefore additional nails
> is not very feasible. Has anyone any suggestions for a feasible
> remedy? Thanks.