Hi Pecan - thanks so much for making this tutorial. I've driven the rover and flown the space plane, and I took a break from suborbital launches to launch a Kerbal X because I was having a problem with the baby rockets and wanted to see if I could launch anything. I'm running into a weird issue with the Stayputnik/fuel tank/engine construction where the engine just stops working after 3000m, even when there's plenty of fuel left. I tried substituting some parts other than the ones you recommended and had the same problem. The engine burns about 10 units of fuel getting to 3000m and then dies. Also, can you update the link in the introductory post to point to the new collection of builds? I figured it out eventually, but I worry other people might not be as persistent. - - - Updated - - - I figured out the 3km problem - I had RemoteTech installed and it was killing my launches when the computer lost connection. I removed it and just put my first rocket into orbit with just SAS assistance