I'm having no luck on my return to Kerbin from Duna. Getting to Duna using Kosmo-Not's guide is no problem. However, I have yet to successfully return. My angle to prograde I am using is 301 (using a heading of 270) and my phase angle is -75. Maybe I am just misreading Kosmo-Not's guide, since the angle listed in 121 degrees to retrograde (using a heading of 270). Any advice?