Good afternoon! I have the Fiskars Rotary and Ruler combo. I used to love it, but lately, I'm finding my strips are not accurate when I cut. The fabric seems to "bow" when it gets toward the center of the ruler. I've had the ruler for a few years and it just started happening. After my fabric is squared, I'll line it up, and make the first cut. Then when I check the strip measurement I notice that it's a little short on the lower and upper half of the strip. In addition, my fabric needs to be squared again. I've replaced the blade too. If anyone has this ruler, do you experience this or what might cause this, or do I just need a new ruler? I appreciate any help
