Hey Dano,
Thanks again for taking the time to respond to my questions, it honestly means the world to me. I'm just going to go on-site tomorrow and do some trial and error. I'm sure it can't be that difficult, like you mentioned, just keep adding pressure until we find the right depth.
I just couldn't believe one of my shops had such an old plotter, going to try and see if we can locate a used FC8600 at the minimum to swap out for their Roland lol. Thanks again for your time and assistance, wishing you nothing but the best in the future! It's people like you who make me still have faith in humanity hahaha, all the best!