YOU GUYS!!! I finally did it! After staring at them for 3 months and viewing video after video and reading and re-reading instructions, and just generally procrastinating, I FINALLY bit the bullet and attached my zippers to my leaders!!! It was pretty easy. I cannot believe I put it off so long.
I know you all will understand, so I just had to share.
Also, since I was fiddling around with my leaders anyway, and mine have always sagged in the center, even after I bought and installed new leaders, and rolling back and forth with the leaders zipped together didn't really improve the sag