I downloaded a nice route that is just over 20 miles long to be used in TS2010. There are thousands of trees along the route extending to the edges of the baseboards. This really drags down the performance. I have used the select tool to eliminate some and performance improves. However a very tedious and boring process. Is there a way to delete all trees of a specific type? It will be easier to "re-tree" than try to chop down thousands of trees you can't see from the train anyhow.