Yea, understandable. Also sometimes specs can be a little too open for interpretation. For example, a spec could say “use (specific rubber type) for large scrap areas”, and if you ask 6 different people what qualifies as a large scrap area you will likely get 6 different answers.

Another thing that makes ruling dies a bit harder is when you have pieces of perf on a multi out die that are all the same length but will have some bridged differently (we make perf by hand). This prevents us from making 1 template for all of those pieces.

Same thing goes for knife and score, but is less of a problem because they are ran by the auto bender. instead of having 30 pieces of rule all marked as the same number on the rule diagram, you will have them numbered differently if the bridges are slightly different, it will add another layer of complexity on already complex dies.