Couple things I'm trying to see if it helps.
- Tough Gut - was much easier to string - I'll have to see how it plays
- My clamps may have been too tight on the Nat. Gut, I can see where that may have caused issues if I crushed it.
I'm going with one racket with the tough gut and one nat gut - same tension - and I'm being extra careful with the nat. gut and the clamp tension as well as working extra hard to avoid kinks.