New guy here but while I was researching which printer I wanted there was a YouTube video that tells you how to install ReplicatorG and Sailfish firmware. One of the things he mentions with moving to Sailfish is having the ability to heat the extruder and bed at the same time. Mine did the same thing. When I moved to S3D it went back to heating the bed and then the extruder. Not sure if this is a feature in Sailfish or the version of ReplicatorG that will use Sailfish.