I have an old Mitsubishi VS50605 RPTV. I was cleaning the lenses and mirror today and I noticed that behind the lenses, there appeared to be a lot of dirt and what looked like dead bug parts (yuch). I am hoping someone can tell me how to safetly remove the lenses to clean the tubes or at least point me to where I can find that info. I assume that I will also need the info on how to refocus the lenses after I am done. I hope someone can help. Thanks
John