Not a barrel bourbon expert by any means , but do know after a couple tours at various places the argument TX maker utilize is - there are more drastic daily swings in Texas than KY or TN. If the daily max/min are swinging 20+ that barrel is “breathing” and the unaged bourbon is in and out of those pores a lot more than if the high is 5-10 degs from the low. This year being a perfect example in Houston “winter”. Morning 45 deg jacket. Lunch 68 no jacket. Leave office 55 and falling jacket back on. Not sure how the dissolved sugars work, but the spirit is “moving” in and out of the wood & char hundreds of times more over the coarse of a 10-12 yr than a KY or TN barrel that’s only seeing those cycles as the fronts move through. Also, wouldn’t the higher summer highs mean more dissolved sugars even if they aren’t “falling out” until Dec or Jan in most of TX? If the summer months are really “bad” bourbon months wouldn’t TX from Oct-March be exceptional bourbon months? Be cool to see a sciencey article on it, but wasn’t able to find one with my google-fu.