B1900C VC textures bug?

I've searched the forums and can't find a previous post on this but forgive me if it's an old question...Is there a bug with the VC textures? I just bought the B1900C (version 1.02) and it's a great plane. The only glitch I've seen is when I'm in the VC and pan about I get glimpses of sky appearing where the roof meets the walls of the model. This join is covered normally by a thick black line (trim?) which the sun visors attach to but in my plane this keeps disappearing intermittently... This happens on all models and liveries. It's only a tiny detail but I wondered if there was a solution?Anyway, thanks for the wonderful PMDG range guys and girls, I have all but the 747 now and they really add a lot to my FS enjoyment.