So my first interplanetary mission was designed to deliver a satellite into orbit around Jool, then a satellite, small unmanned probe, and small unmanned lander to each of the three inner moons. The payload for each moon was adjusted to the moons themselves; parachutes for landing on Laythe, making minor tweaks to my Mun landers for Vall, and obviously heavier equipment for Tylo. After getting the hang of transferring to Laythe, the mission went pretty smoothly. Tylo was my last stop. Deployed my satellite with no problems. That left a small probe and rover. Landing the probe went fine. Deployed solar panels, named the lander, engines shut down. So I moved onto landing my small rover. Here's the problem. I switched to the landed probe so that I could warp my rover lander around to it's deorbiting position and the lander was doing a slow bounce on the surface. Engines weren't just de-throttled, they were shutdown, the weight of the probe is balanced in all planes and it was sitting just as still as could be wished when I left it. I *just* managed to keep the probe from flipping over and managed to get it to stop pirouetting long enough that I could switch to another craft. But when I returned to the probe, it was back at the bouncing and spinning. It never goes more than a metre or two from the surface, but I'm at a loss to explain why it's behaving that way. It's on a level landing spot and it's the same basic probe design I've had success with landing on Kerbin, the Mun, Minmus, Laythe, and Vall. Bulked up to deal with Tylo's gravity, but if anything, the added fuel and such have lowered the center of gravity, which should make it *more* stable. So, any insights? This sort of thing common on Tylo? Maybe I've landed on some sort of anomaly? Thanks, B