Less, you're welcome.
I use a adapter so my Ovalmaster uses Dexter #3 blades. You probably do, too. I find when I install a new blade, the tip usually breaks off with the first oval I cut. It doesn't seem to matter. I still get lots of mats with each blade - broken tip and all.
Recently I tried using a glass "slipsheet" on my Fletcher straightline mat cutter. That didn't work at all.