First Timer on Stargazers. Using a generic Max-Cass telescope, primarily for lunar viewing. I have had good success with a photo mounted DSLR. Recently, just using the eyepieces (including a Barlow), found I cannot get it to focus through either either the primary eye piece or alternate 90 deg. eyepiece. I tend to see more reflection of my own eyeball and floaters. Can't get nearly the image I obtain with the camera attached. What part of the telescope is likely the problem. Since the DSLR still relies on the telescope focusing knob, Where do I start? Could a jolt have caused a focusing failure, mis-alignment? Closest shop for me is Skies Unlimited in Pottstown, PA. Thanks in advance. If post should be elsewhere, please advise.