Right now I'm working out the retro pack and smart part integration. Smart parts are what is going to control the functionality of these things once they detach. The boosters will auto-detach when their fuel runs out, then auto-arm the chute charges. When they hit the right height the drogues will pop, then those detach at a certain height and pull out the main chutes which will then fully deploy at a set height. Then about 100m off the ground the gear open and 3-5m off the ground the retros fire. It all worked out great when I tested it with stock parts, so I'm just making my own art now and integrating it all. The chutes brought the booster down to about 13m/s and the retro firing slowed it to right around 2-3m/s for a soft gear landing. I might have to take a break from this for a few weeks, though. I lost my job at Turn10 a few weeks ago (my contract ended) so I've been unemployed since. I was contacted by Autodesk, recently, to help with a 3dsmax demo scene, which is supposed to be about 4 weeks of work. I'll let you all know if that contract gets signed or not. If not, I'll keep trucking ahead on this