This may sound very stupid and/or clueless. But, I just recieved a Beseler 45S colorhead. I'm a curious fellow and also wanted to check and make sure the interior parts were in good shape, so I took apart the diffusion chamber (a 4x5chamber, if it matters). I was a little surprised to find two moulded styrofoam pieces inside. It seems like they're meant to be there, and not just for protection during shipping. My impression is styrofoam is a great insulator and thus it would be fine to have it so close to halogen bulbs, but at the same time it just seems so odd to me, and that perhaps maybe the styrofoam actually was just only supposed to be there to protect during shipping. But it's angled at 45 degrees and is white, and the colorhead most certainly works with the strofoam in place. Does anyone know if the styrofoam should be there?