Tips and Tricks - An Unexpected Benefit

As mentioned in my previous post, Tips and Tricks - That Gap at the Heel, I basted the front and back of the leg together to eliminate strain.
For this particular heel, I'm adding a bit of duplicate stitch. I learned while knitting my last sock that this is much more easily done before the heel turn.
So here is the benefit of the basting. That piece of heel is now almost completely flat!

Here are photos of the heel front and back. 

My nice flat piece of knitting with the added duplicate stitch