Deleting TURF FX grass from tracks and roads



There are a few areas in routes that I would like to modify by deleting sections of TURF FX grass that appear in the middle of tracks and roads. I remember looking this up and doing it in the past, but I cannot find the topic anywhere and can't remember how to do it. In Trainz 2022, using either Surveyor 1 or 2.0, could somebody please remind me how to do this?

Thank you.
Push F1, then click on Advanced. Click the TUF FX you want to delete. Then go to the top and click on the Height Down. Make sure your curser is the size you want it to be then, run it over the areas you want to delete.