Nice job on that saw. A friend had one of those he'd used for a very long time. The fence and blade are surely the key, so long as the blade is square to the miter slots. I also suggest you build an outfeed table. It is so much safer. As to blades, when you find them, make sure you have at least 2 of the ones you need most so you have a backup while one is sharpened. Beside that, you may find that eventually, they are no longer available new. Really good job on reconditioning and adapting that saw.