[QUOTE=flick;756413]I've completed a truing and re-finishing job on my gibs, and just wanted to share my experiences and observations.
That was when I pulled the gib, and discovered that it was bowed, twisted, and poorly finished from the scraping job it had been subjected to. I hastily decided to refinish all my gibs, and took the rest of them out and started working on them before I took the time for any more measurements. As it turns out, I couldn't be happier with that hasty decision.
I've read other forums on this subject, and our Patriot machines also had bowed gibs as well. It seems to be a standard of Chinese manufacture to leave the gib to a blacksmith, no matter how well the rest of the machine is built. I left the job up to the students and they did an excellent job of getting all the gibs flat and re-doing the locator indents for the adjuster screws. Once the gibs are flat and adjusted properly the machine performance is 100% better.