Just thought I would pass this along. I just changed out my spring bushing and the bolts had rusted to the sleves. I tried 24 teeth sawsall blades and kept burning them up on grade 8 bolts. Then I tried the Lennox carbide edge blades with no teeth- just grit edge and it cut them in less than 5 min. On the back bolt, I took off the nut and cut off the head, then put the nut back on with some washers and as I tightened it, it worked it's way out easy. Just thought I would pass this along. I'm sure someone has a better way but this works good.