my Data General Nova 4/X, disk woes continue

I was always counciled never to ever touch the reticules, or the sensors, unless something dirtied them. And then in the field, replace them if that was the case. There was no recommended way to clean them then. Now you have to try. At microdata, the material used to make the image on the reticules was not something I was ever told, and for both the dynex, and the microdata drives, they were supposedly the same. I'd be very very nervous to touch them. I did see one case though where there was strange things across all heads. You have gotten good suggestions from about everyone else on most the rest I would suggest. hope you sort them out. I have a few Microdata 9000's which are 5+5 that I will want to fire off sometime, so I am watching your experience with great interest. Thanks for such a detailed description. jim Tom Jennings wrote: