Maybe you need to adjust the texture by moving it or streaching it a bit, I don't know how you'd do this in maya but take a look through the texture panels for.

number next to U, W, and rotate? U and W will move the texture up/down elft/right, I'm guessing you'll need to rotate the texure.

You should try a proper texture though as the one your using has squares and is proabbly showing up the problem big time another texture might not do that?