When my warp tension went awry on that natural coloured weaving posted about earlier I cut off the first few feet and re-beamed the whole thing. It turned out to be well worth the effort.
On the advice of some of the forum members of a Saori weaving group on Ravelry I went out and purchased poster board and cut it into strips that were exactly the width of my warp beam. Then I rolled the warp forward all the way and re-beamed, this time placing the strips of poster board as I went. I did the "yank 'n' crank method of reintroducing an even tension and everything moved forward smoothly.
While I was in the 'redo' mode I also chose to pull the warp ends out of the Comb Reed but not the heddles. This way the warp ends stayed in order and I was able to then resley them through a regular reed with slightly wider spacing. It worked well and I continued to weave off another 3 table runners.
What happened to the wonky part from the beginning when the tension when awry? Well it certainly could not be used as a table runner. The edges were much tighter than the middle because of the warp spreading issues. It wouldn't lie flat, but as I looked at the piece I realized it was long enough to be a shrug, and for that use the tighter selvedges were actually an advantage!
Soooo, ~*shrug*~ I'll go with the flow and "allow" this portion of the warp to be a lovely shrug instead. I'm knitting cuffs and most likely an edging along the top and bottom.
Yay for 'mistakes' that force us to think outside the box.