Yes i know that now, I think that was my mistake. Some of the holes were to small, but i could not go any bigger b/c it would have been bigger then the space allotted for the opening. That day i went to lowes i could not find any blades. Went to HF, they only had pins, same story at HD finally, 1/2 mile from the house, true value had two types, spiral and the #7 skip tooth. i got the last pack. After 2 hours of driving around. Sooooo needless to say i ordered some from Pegas , spiral and a couple packs of the lower #s, for now. Thanks for supporting my thought, at least i know i was half right. The saw is still on my Black and Decker work bench in the garage. Once i get it downstairs and set up they way i want it will be a lot more comfortable. Carl