Can a palm nailer loaded with a 1 1/2 inch nail, plus a person's palm, fit in a 5 1/2 inch space between bottom of floorboard and top of a girder below? What about a 3 inch nail? Prefer fullsize palm nailer as contractor more likely to have one, but mini OK if that's what it takes. The 5 1/2 inches is the depth of nearby floor joist (actual measurement of old "2x6" rough cut joist is around 2 1/4 by 5 1/2). I'm drawing up instructions for contractor to install seismic strengthening of my 1922 house.