Has anyone noticed this. I think my truck breaks the tires loose on a 3-1 down shift for a quick mili sec @ about 30mph. It has always done this since new. Now it does it more with my tune, G80 locker and Kumho Exta tires. It's just a little 4.8 short bed truck, but she won't peel from a stand still; 3.42 gears. So is the chirp a peel - or a skid due to a lower gear?