We found a textured material that would be perfect for us, but it's 20 mil thick, and the max mil thickness that our HP Latex 310 can supposedly handle is 19.7. Has anyone here pushed the mil thickness limit on their machine before? .3 mil doesn't seem like a huge amount to go over by, but I really don't know what the risks are to the machine. I don't want our printer to be down because we got greedy with it! I'm hoping that the 19.7 limit is more of a guideline than a hard limit, but I'm wondering what you guys think.