I had this sign printed on 3M IJ-180c w/companion 3M laminate in June 2020. I mounted it to the aluminum sign and the customer installed. It's already starting to brown and look bad on the right and left side where the white material is not printed. I looked into 3M warranty and this has a much shorter warranty period because of the daily time in the sun and location in Southern Arizona. I'm wondering if there are any other products or types of production processes that may last longer? Would something like Oracal 751 or a liquid laminate perform better? What do most sign companies do in this circumstance in New Mexico and Arizona? Thanks very much!