Ok, I took it apart, re-measured..... The 2nd block was not quite 1/8th off on the seam, and that block was just a hair over 12.5". I was able to fudge it enough after that.
Thank you all for your input!!! I think I was mostly whinning, and that it's due to my going too fast, and carelessness. This happens to me every time I use sashings, one would think I'd learn.
I don't understand how the corner stones would help? (I understand they look better with wider sashings). But wouldn't they make my uneven-ness look more pronounced? I've never tried using them, as I figured they'd just show off my messes more.
Thank you all again! :-)
I've just been re-reading through all your posts, and realized I never square up blocks! Have no idea how I missed knowing that! It also never registered in my mind that there was a square ruler thingy to check their sizes! 12.5" is a usual size for me. I'll have to look next time I run to the store!!
Thank you all again!!!! :D :D