I'm modeling a rocket in Rocksim. The design is a simple 4" rocket about 5' long with 3 fins. It will fly on I and J motors. To those that have modeled a rocket and then flow with an altimeter for data. Does Rocksim do a fairly good job of estimating the flight altitude? Or do you find it over or under estimates? Obviously, real world conditions will have an effect, but I'm curious how accurate it typically is.