In process of doing upgrade on my Tormek 2000. Part of the upgrade is a AWT-250 trough. When fitted it is a tight fit sticks in the frame at the bottom rub point being where the magnet is. My previous trough which was a replacement for the very original grey one slides in and out with no problem. Because the AWT-250 sticks the jerkiness spills water defeating the reason of having it. I have callipered both troughs and the AWT-250 is just a 1 and a little bit mm wider. What is the manufacturing tolerance would a replacement be the same. Anyone any thoughts please.