I am original owner of a Meade 2080 Premier 50 SCT. It has the MCOG feature. I noticed the other day that the corrector plate looks a little "cloudy" on the inside. Is this normal due to the age? It was bought by me in 1990 at Redlich Optical in Alexanderia VA. I also saw some dust and a "foreign object" on the main mirror. Is it worth the trouble to take it apart and clean it? I read where 90% clean is good. It's well collimated. Trouble is, I don't have anything to compare the visual images to with which I can say, hey it looks good or not.