Solved PEI Upgrade and z-offset

Hey guys, it looks like I've got that elephant foot fixed thanks to your script help.
I ran a few single layer prints as suggested and settled on -0.8. I may go back and tweak it a little more but the first layer is so much better now.

What is really funny is that before I printed using Mark's script the LCD said the z offset was +0.7.
It didn't show negative numbers until I started using Mark's script.

Thanks for your help again, this newbie really appreciates it.