Thanks to all for the opinions and advice.
This is what I found out about the Eddington poly in Natural color in 277, 346, or 415:
Good luck finding it.
Campbell does not stock it. Special order only, minimum order 50 pounds.
So I called Eddington and talked with Michelle, and was told that the manufacturers using the heavy threads
buy only black and white. Eddington has no stock at all on 207 or 277 in Natural, but does have small amounts
of 346 and 415. She very kindly offered to send me a quarter pound of 377 to try out.
Greg,
Thanks for remembering about the Pearson problem (s). I have been away from home for several months
on a contract job so have not had a chance to deal with the old No. 6. If you could answer some questions for
me I would really appreciate it.