This week's Tuesday Night World Championship race went MUCH better. I was able to ride aggressively even though I didn't get any results. It was a good race pace set of intervals and no cramping or muscle tightness. I did two things differently: (1) I put the ratcheting buckle on my shoe back to the original (vs. alternate) position and (2) I inhaled the recommended number of Endurolytes before the race. I have a feeling it was more the buckle than the Endurolytes. I had moved the buckle after discovering the alternate position while cleaning my shoes a week and a half ago. I really think that it was putting pressure on a part of my foot that was then leading to the cramps and my other muscle tightness. Since moving the buckle back last Friday everything has been good.
Now I have to look for that pea under my mattress.