I made a court but there's a lil' prob! get in plz!

I Made a new court with jao's tutorial, i got a good court.
but i face a lil' prob i want to delete.
help me, i fix the prob, and i show you pics from the court.
here is my prob,i made the court,i put a wood floorin the paint,
but the wood ruled other places.
how can i replace this wood near the paint and the black area in the other side, by green stuff(the floor)?

thanks in advance!

PM me your court files and ill post a quick lil tutorial on that