No, but I did figure out the thing that allows to use of the tanks as ballast. I feel like now it is more of a thing of resource management and finding a balance as the two props (the radial ones) drain energy at a rapid rate (even when I turn the tanks into batteries, but to be fair that's on full throttle and be intended) and the balance I ended up with for my sub was back-heavy (and having positive buoyancy). I know this may sound weird, and I mean no offense, but may I suggest an addition that tells what one's buoyancy is in an given ocean (depending on if its Kerbin, Eve or Lathe)? Or it it an issue that i don't have the Skunk Works mod? Like I said, I installed it with Ckan. But to be fair, I tried to create a large submersible with many research and passenger sections. But at the end of the day I feel my problem might have to do with weight and buoyancy, which the latter is harder to tell with the only way to figure it out with trial and error. Not to knock your mod. Your mod is perfect to make subs, and with the BD armory mod it can be very fun. Thank you for your time.