They only had cotton Gutterman's so I went with heavy duty poly C&C. Even though the bad thread I had was C&C it was from Wallyworld and wasn't the heavy duty. People definitely need to check their thread and where they get it since it seems to be about age and product turnover more so than just about the brand. Wallyworld probably doesn't sell much thread so it sits there and gets dried out.
If you don't try due to fear of failure you've already failed due to fear.