I keep suffering with a "clunk" noise in the Y-Axis. I follow the commissioning process and everything is nice and smooth. When I tighten it all up the X motor side rod makes a big clunk noise when I reach around the middle of the bed while printing. I have done the process several times and always get the same result. The bars appear to be straight and as I said everything moves great until tightening and putting the Y axis motor in position. Could it possibly be the Astrosyn dampener? I know that I level the Y motor as I tighten it onto the frame and it gets pulled down/up as it runs. Just wondering if anyone has had a similar experience.