I have the same tires, and I still do rub at full lock nomatter what... I guess it's because of the nose dive-in. I think if I level it with the rear height it would be fixed, but thinking about when I load the truck, it would look like carrying an elephant on the rear and the nose up...
BTW, I also had to hammer/trim the pinch weld because it made a small cut in one of the tread wedges.

I have trimed the front bumper as Sal did, and when driving on reverse at full lock still rubs somewhere, I will have to take a better look at that...

p.s. tried to upload pic but didn't work either on IE nor Chrome...