Not a lot of options for 59 1/2" blades in stock around town. Found a 3/8" 14 tpi hook style blade and it is much better than the blades I was using. Cut both ends of 120 PR blanks this morning and it was still going strong.
Had to have the blade for today. Checked the chart and considered a metal cutting blade, went with an Olson blade at Menards - just $7.50-ish and it did a great job.