Peters, you are correct in your assumtion of the set of the teeth gone. In fact you will probably find that the blade has been 'sanded' narrower to the point where the set has been ground away by the abrasive material you are cutting. The best (and cheapest) way is to replace your saw blade with a fibrous one, most rental houses and (bigger) hardware stores will hve them. They are very commonly used on gas powered circular saws to cut masonry (such as concrete pavers) by landscapers, etc. The ultimate is a diamond-tipped circular blade, they will cut way faster, and last MUCH longer, but they are also 10 times the price, so if you don't have a lot to cut get a couple fibre blades. Of course I don't have to remind you (but of course I will) that any time you are doing this sort of thing, the cutter & and anyone nearby MUST be wearing adequate eye protection..... Best of luck.

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