I should have said MDLMAT for FS9 stuff-they're basicly the same program as far as functionality goes. I downloaded OBIOs(?) tut, and I'll have another go. The display issue I was going to have a go at is -for instance- Itos Barracuda, the Alpha Firebrand, Scubbies Seafire 47- when the props up to speed, the hard deck behind the prop disc vanishes- you can see the water, and auto gen/scenery disapears as well. But the start blur is fine. It does not seem to be an alpha thing, or maybe it is, there is; however, no fix. So I got to thinking- could the start blur material be substituted for the running prop blur. If that method would work, then other FS9 models that are otherwise ok could be saved- EG the simshed Wessex. All blue sky , but it may be worth trying, as a FSX Barracuda is unlikely to happen, and I'd love to get the Wessex useable for another retro carrier project, though the grapevine sez Mr. Franklin was thinking about a fsx Wessex in the future.