...sorry, I goofed with my last message to you! I'm new at this, much better at quilting, I promise! I think we've all had problems with rotary cutting now and then. When cutting the longer strips of fabric, my guide would sometimes slip by the end of the cut and those tiny bits do add up. Have you tried walking your fingers (carefully!) along the guide while you cut? Having an absolutely flat, solid cutting table and a new blade can also make a difference. Hope this helps!