Break time, thought I'd upload this tip before I forget. When making up stud walls the ends of the top and bottom plates often tend to split specially if your using spiral coated nails. A little tip I have been using for a long time is to drive the nails in at opposing angles so they cut across the grain. You will get less splitting and better holding power. I have disassembled frames in the past and cursed the holding power of the angled nails whereas nails driven straight in usually come apart with a couple swipes of the hammer.