From a glance, the high versions have different nose cones. If its not too late, I'd love to request a bit of feature creep...Could you include a readme file with the empty mass of the stages, so we can calculate appropriate chute numbers to safely recover the stages to < 6m/s, that would be AWSOME. I'm already adding in probe core modules (probe core, battery, and antenna, and a tiny RCS tank if appropriate) clipped into the SAS modules to assist in recovery, but I keep running into lithobraking issues , even with a metric butt ton of chutes.