Well, I figured out part of my problem. The Coats .004 that I used was polyester and not nylon. It did not have the same strength.

I found the .005 nylon at Walmart today, but only in clear. I really liked the smoke color better. I'm going to try a couple of hobby stores this weekend.

Thanks for all the replies. I had sent e-mails to several companies and got various results.

@ScottP TCO was one of them and they gave me some options. Thanks.