FFXIAH.com

Just like with treasure hunter, there are countless conditions and formulas you could follow that may or may not yield different results than one that is random and incoherent when it comes to crafting. The point is no matter what trend of conditions you follow, the results are too vast, cryptic, and insignificant to set in stone which is "better" to follow.

Tests have been done, over and over and over again and in the long run it's completely inconclusive. As said before, if you believe your terms and conditions will help then follow them. Odds are it will give as little benefit as it would damage to follow or not.