Thanks - I'll take a look at the config for it and see what I can figure out.
Update - The RealPlume config for the Cryo engine (the CT10) is standard. It doesn't help me in this case. I'll continue testing and figuring
I started working on this, but am hung up on the RL10A-4 and B-2 engines. The nozzles have a deploy animation that happens before the engine ignites and for some reason that's preventing RealPlume from showing.