Cindy - are you still looking for help with your two part rectangles?
I've been working on this quilt as a BOM through my lqs. I'm not as far along as natalieg - I've had a major oops from what I think are poorly written instructions at one point and I'm working out how to fix it - but I did get through the two part rectangles just fine. You definitely need to paper piece them or use a TPR tool such as Tri Recs or BlocLOc because when you're trimming it to size, the diagonal seam does NOT go through the corner.