I have an Omega DII enlarger with an Aristo VCL 4500 head. I am a bit concerned about the light leak between the enlarger head and the negative carrier. There s eems to be an excessive amount of light that pours out. I have loosened the scr ews that hold the head, trying to align the head and negative carrier a bit more precisely, but there doesn't seem to be enough weight on the head to have the t wo surface meet and stay tight together. I purchase the enlarger used so I can't tell if this is normal or if it should be a concern.