I did. I have only got voicemail when I call them.
They did get back to me by email, and in their message they mentioned it might be hard to get through by phone because they have only one person to run the phones and the floor.
They have normal blued safeties, but not normal silver ones. So yeah, I am considering doing exactly that - buying a second set and cutting them down.
But the base plates can be found on their site. I guess I just didn't notice because I was looking for a whole magazine and not just the bottom of them.
Ultimately, we are still in coms but they basically said they will need to do a custom order via phone because the site isn't configured to sell the combinations I am looking for, so we will get it done soon.
Way she goes sometimes.