Yes, I have a config file I will send you. Mariss sent me a G540 last fall, and I just haven't gotten the file to you yet. I think he intended to put it on your website near the Mach file.
I have sent it to a couple of others who have actual machines, and so far it seems to work fine. I will write up instructions on how to tune it as well, and give you a zip or tar archive with all the info.
Sorry it's taking me so long to get the config to you.