Hi all, I'm new here thank you for approving me! I have had a sign business for 22 years using Gerber Edge and GS15+ plotter. I've purchased a couple of backup plotters over the years and just started having a problem with the second backup. Broke out the third backup that I bought on ebay a couple of years ago and it is NOT a GS15+ but a GSx+. The problem is, it doesn't have a swivel knife holder and the one from my 15+ is too big to fit in the carrier. Does anyone have an old one or know where I could purchase one?