On Sat, 10 May 2008 14:01:37 -0700, Smitty Two
wrote:

Maybe you can slice 1.5" off the post, on one side, and add a 1.5" slice
of wood to the other side.

Hard to do on a 2X4 post )

Huh? Did the OP actually say he used 2 x 4's for posts? That would be
pretty damn lame.

No.

We now know the offending post is a 4x6, 1.5 out of square plumb bob /
alignment.