Won't carve one line

I carved a sign and had to scrap the board because my bit was chipped. Then, I switched the bit and carved it again. The bit did amazing with the entire project but it will only barely carve one line and I can’t figure out why. I have 2 mirrored images and it carves the line fine on one of the images but not on the other. Anyone have this problem?

Welcome to the forum share your project so we can see what its doing and help you correct the issue