We have a BossDelta300 and I am having a real challenge here. There does not seem to be an "official" BossDelta Cura profile so up until now I have been using the Artemis300 profile since I was only single extruding.....everything worked great.
Anyway so to get the second extruder I ended up having to use the "Generic SE300 DUAL" profile while adding a custom printer to Cura. I also manually placed in all the printer dimensions, Gcode start/stop for the printer, and each extruder.
So what happens is when I print with any gcode created with that profile the bed heats up, then the hot end heats up, the print starts and then quickly fails because the hot end does not continue to heat after the initial warm up

Does anyone have any ideas?