I very meticulously measured and cut the fabric for the tarp I'm making. The length of the two pieces which I sewed together to make the ridgeline are exactly equal in length. I carefully lined the fabric up and used lots of wonder clips. Yet at the end of stitching, this is what happened:
Any suggestions on what to do? If I have to seam rip the whole ridgeline I will do it, but I wouldn't be super happy about it.