Yep, Cathy - it's driving me nuts. This entire pattern has been a headache. The instructions also had me make HST's by using 2-7/8" squares sewn on the diagonal. Directions never said what size the finished HST's should be, so I "assumed" 2.5". Meticulously trimmed 500+ of those suckers only to find later after sewing 4 of them together they were supposed to measure 3.5" square! So guess who will be trimming all these 2.5" HST's down to 2"? Yep, me. I guess if I have learned one lesson it is that I should make one of each block prior to going ahead and constructing all of the pieces and then learning that problems exist.