You can RMA Black Jaguars
using these instructions
I doubt you can get a replacement in time for Lone Star, but you will have them for the future. I have never RMA Jags with this procedure, but in 09 I did exchange for replacement with Luminary Mirco reps at the competition. Do Luminary Micro/TI reps come to Texas competitions? If so, maybe they could look at it for you.
You should be able to get some on loaner speed controllers at Lone Star if you dont buy some before hand.