Crawler course update 8

Add new feature replacing 'fried eggs'. Just updating-short drive over new feature that adds bit more challenge.
Part 1 • Crawler course progres... building main features
Part 2 • Crawler course progres... short drive around what we have so far...
Part 3 • Crawler course progres... revisit problem corner
Part 4 • Crawler course progres... painted, start dry river
Part 5 • Crawler course update 5 finishing east side of river
Part 6 • Crawler course update 6 start west side of river
Part 7 • Crawler course update 7 finish west of river, add few details
Part 9 • Crawler course update 9 Minor update, add water tank, abandoned 37' coup
Part 10 • Crawler course update ... Cutting layout in half to move