Just a note on my above steps or an addition .

Step 4a. In creating the walk I copied all my bones for my pass pose, then I "pasted X flipped" to create the next pass pose quicker. After doing this my character position gets moved quite a ways from the position where I copied the pose, this is unusual. I have to move the character a long ways to the new position.

After doing this the IK Target bones start to go wonky.