Ugh. Oh well.
I'm a stubborn SOB, so I refuse to give up. Aikido has already improved my rolls and breakfalls, and maybe someday my ability to do something in this style other than land on the floor at high speed without hurting myself will improve as well. ;) Although I'm not feeling at all simpatico with my sensei on a personal level, he is an 8th-dan black belt, which is astronomically high. There is clearly much I can learn from him, and that just has to be my focus right now. One small improvement at a time, with forays back to TKD to restore my self-confidence in between!