Well, here's the final verdict. After looking at images on GOOGLE for "scant 1/4 inch" - I see my issue. If I were to sew at a scant quarter, I'd be spot on... Moving forward w/the pineapple quilt, not changing anything. My next quilt, I will sew a few test pieces and measure, using the scant quarter. Quilting is such a learning adventure, no? LOL