I’m including some images to show what I was talking about:
These are the 4 inches I was going to gain from lifting the bottom skirt:
This is sprocket meeting with the nail brfore it got ripped out, you’ll notice the color is differente, cause I already had to replace the nails due to a prior issue with the chain alignment, the width of the nails is 2mm by the way (see this post: Chain motors spin at different speeds during Y axis movement )