Ken, I have an old Shakespeare Super Necedah that had a twist in the upper limb. The string was tracking at least 1/4 inch out of the groove. I would constantly twist it back and it would track true, but after about 6 or 7 pulls it would drift back to the original twist. I finally tried the hot water method after reading about it here and it worked. I held it under the faucet, about 105 degrees, for about a minute, twisted the limb hard and had someone change the water to cold before removing it. I think the water was hot enough to set the repair, but not hot enough to cause de-lamination issues. I've pulled the bow hundreds of times since and the twist has not returned. Good luck!