I scaled up the ROUND-8 Toroidal Tank, and am getting two bands of z-fighting along the seams of my texture polys. They're about 1/4 from the top and bottom of the tank. I managed to hide the top one inside another part, but the bottom one is still there and mildly annoying as it flickers when rotating the camera around. I highlighted it below.
Any suggestions?
I'm pretty sure my graphics settings are reasonably high.