I can't help you too much on this one Elizabeth - I don't have the physical space to put books on the warp and slowly wind it onto the beam. Instead, I move between the front and the back of the loom, checking to make sure that any errant threads are not being caught in the lease sticks, the raddle or anywhere else as I wind. I also keep watch on the paper on the warp beam, to make sure it's staying straight as it goes on. When you have threads catching in the lease sticks or the raddle, it's likely caused by slightly uneven tension on the threads as you wound your warp - we're human, it can happen! It might take me longer to get the warp on the loom, but I can catch any "stickiness" before it causes me grief.