Cynthia

Jane, that's pretty much what I did.  It worked fine for the next foot but it did seem to be sagging further.  I worried that this would be an increasing problem over the next four yards.  Since I was at a spot where I expect to cut the finished cloth, I wove a header and pulled up the loose threads before beginning the next length of cloth.  So far (two feet on) the tension seems to be holding well.

I think I must have done something wonky in my beaming.  Very frustrating.