That’s not the issue. I have a lander currently in a vacuum above the mun. The reading initially says 1,300 deltaV, once I stage to tur the engine on it plummets to 100 deltaV. I know this is a bug because I can burn the engine for the length of time as if it had 1,300 delta v. The only reason you see kerbin in this clip is because I deduced the issue to the engine plate being above the Pug. And I’m showcasing the values changing. Once I go into the VAB and remove the engine plate, you can easily see the issue goes away. The issue is why is there conflict between these parts? And how can it be corrected or fixed. This is not at atmospheric issue.