:wtf: ... well, I just now discovered something of importance ... I had heard many times, that Mylar reflectance is affected by it's overall condition (scratches, smudges, etc) ... but, I never knew how much ... my Mylar is (I thought) in pretty nice condition, I clean it only with Windex and soft papertowels ... looks very shiny, not dull, BUT ... the corners of my cabinet are flat-white painted 2x4s ... the walls are all quality Mylar ... my white 2x4s are reflecting twice as much light as my 'one-year old shiny Mylar' ... damn it ... :wtf: