hi everyone I aquired an ETX 90 with Autostar 497. Seems to me the Autostar aquired a mind of its own. I can align the scope properly and everything will work for a while slewing to the object I pick. The scope will work for a while then go crazy. I get motor errors or the scope will not slew to the object I select. I would like to know what should I do and in what order to do it to restore it to factory settings. I have read about updating the software but am leary of doing due to the fact that I heard you can really mess things up. Can someone please guide me to what I should do? Seems the polar ailgnment always works but I have issues after that.