The Elcano Challenge: Ground-Based Circumnavigation (4th) in Challenges & Mission ideas Posted November 1 · Edited November 1 by king of nowhere question: Now that I'm done with Wal, I was considering going forward with Polta. However, I discovered that the roll cage of my rover doesn't work anymore as intended, because wheels are a lot more fragile and keep breaking. I considered adding 4-6 struts on the bottom of the rover, to be deployed quickly in an emergency to complete the roll cage on the bottom and protect the wheels. A minor change for a rover that's already very elaborate If I were to do such a change - using alt-f12 to bring the new rover in place and pretending it's always been like that - would it be legitimate? Or do I have to launch anew and repeat all the trip to Polta?