Had a similar problem like that. Is it happening to just this add-on aircraft or all. Not the default aircraft. If happening to all, you have your anti-aliasing on in FS and your video settings. Turn off the one in FS. It cleared up my problem. Once I get my settings right in FS and on the video card I take screen shots of each section, so if I muck about with it and screw it up I can put it back right. I did have one aircraft, that for some ungodly reason changed my settings. Nothing worked until I removed it.
Best I can tell you at the moment
BR
Derek