RE: fuel soaked balsa help
you can also soak the area with rubbing alcohol and put cornstarch on top. As the alcohol evaporates through the cornstarch, it soaks up the oil. A lot cheaper than K2R if doing a large area. Get as much oil out as you can. It may take several applications of alcohol and cornstarch, then use balsarite or stickit before you try to recover the area.