That line about the crease sitting below the body line is exactly what I ran into last month. I kept pulling the full panel on a job and fighting it the whole way, then a buddy told me to just pop the lower section and work from the crease up. Took me about 10 minutes instead of the 45 I was burning before. Only thing I'd add is to check that the seam isn't hiding a clip underneath, cause I missed one and popped it loose by accident. Learned that one the hard way.