> I see. That off-by-one might have been caused by my making circles from > arcs. So, should I start an arc from 0 to 90 degrees (upper right > corner), then tune by hand? That's what I do. Make one arc on-grid, then fiddle with the angles manually. That also lets you make arcs that don't start or end on multiples of 90 - like 30, 45, 60 degrees, etc.