At lest I not the only one that has these problems. Besides the printers I have a plotter for doing blue prints. The head travels 36 inches, back and forth, very rapidly; I had to make a wood cover for the unit. Someone would sit on the plotter and as the head came by take a swipe and would knock at lest 1 of the 6 pens out. Thus destroying the print and getting ink all over. Some of my larger plots could take over an hour, plenty of time for hunting of pens. Since the cover it has become a 60 inch by 12 inch race track, trying to get that crazy noise going back and forth. I have my fun too as once in a while the brakes don’t work and we have a low flying cat.