Courtney asked to see pictures of my loom and here they are:
I've since realized that putting on that extra long warp has been my downfall. I ran out of the brown paper that I used to separate the layers on both the front and back beams and unfortunately, used any material I could put my hands on. There's a good reason why they tell you to use the brown paper -- it keeps the layers separated AND keeps the tension in place. I had to finish the first scarf sooner than I wanted to when the tension went kerplooey. I've learned my lesson but it's too late tonight to re-warp the loom so I'm leaving that task for tomorrow.