Land poly bleed over problem

I'm working with Hamilton Airport. Using G2k5.3 as well redoing it with Sbuilder. Same issue.When creating a poly of the outer airport proper, all is good.I give it layer 6.I draw within it a new poly representing grass that is kept maintained. Layer 11.Problem!!!The polys are bleeding well over the detail created in G2k.See attached LWM viewer which shows the project correct.Image2 shows top down and the red lines represent where the textures bleed over. This only happens with this Airport proper and not outside of it.I've never come across this before.Any suggestions.Alhttp://www.flightontario.com/images/sig_asibley.gifhttp://forums.avsim.net/user_files/141566.jpghttp://forums.avsim.net/user_files/141567.jpg