Mine do the same thing. I just rotate them side to side so the little flaps face the other way. Usually every couple hundred miles they get I rotate them.
I do the same, although I run ET Street Radials. The concept is the same for all soft compound tires. It's due to tire slip with a cold tire. You need to make sure the tire is up to temp BEFORE any type of hard acceleration. Adjusting inflation will have no affect. Finally, you say you don't do any burnouts? Well, there is most of your problem!!