I searched the forum, and I've noticed other have revived/updated/upgraded a few of the old ULS machines. I own 5 of the M300s, a ULS25E (baby M300), and I also have a old, beat up ULS-25. I believe the tube is good in it, and would love to make a project out of it. I'm pretty sure the board/controller is shot. From what I've read, this can be replaced/updated with a new DSP, correct? Would someone who's done it be willing to explain the process a little more? Thanks!