Thanks everyone, for your tips. The pattern I am cutting is all straight or gentle curved lines. I received some #12 skip blades on Friday that I had ordered. I tried them that evening, and they are definitely too big--they were catching in the wood and lifting the workpiece off the table. So tomorrow, the first thing I will do will be to check the alignment of the table. Then, I will try the #5 blade, and watch the tension, as well as go a bit slower. I will agree, that I was probably pushing the workpiece too quickly since there were no tight turns to do. Thanks again to all of you. Now I can hopefully finish this project.