I purchased new commission plates for all four of the TR3s I am restoring because the old ones are in such bad shape (sadly, all four cars were in the process of being parted out). I also purchased two sets of number/letter stamps from Harbor Freight and attempted to stamp duplicate numbers on one of the old plates. I am not able to get the kind of definition that the original stampings had. The Harbor Freight stamps seem to be too broad or don't have enough depth (not sharp enough?). I have tried backing the plate with various materials while stamping, but I still can't duplicate the originals. I am considering taking the new plates to a machine shop, but I don't want a machine shop ruin the new plates trying to get it right. Any suggestions or ideas?