I have a new to me Harrisville T4 . It has a metal warping rod that is attached via 4 grosgrain ribbons spaced every 9 inches to the warping beam. There is no apron rod. I have removed the two middle grosgrain ribbons in order to spread out my warp and kept the two end ones attached. I've inserted my lease sticks and tied them to the castle but now need to stabilize the warping rod with additional cord lashing as Jane shows in her video. Suggestions of how to do this without an apron rod?