One thing that I found helps stability in v12 experimental is to stick one engine on either side of the middle of the HV, pointing down. This provides stability and a hair more lift, though not above HV norms. Had to remove one of the harvesters though and something else, but I can't remember what it was. Also, turned the roll adjustment to .1 that helps a bit.

Go ahead an do what you want with this. I'm still trying to get the hang of building ships in this game and taking apart your ships and putting them back together with upgrades has been very informative.

Thank you! I will check it out. I had troubles with leaning when building. I did adjust it some to get it better, but could never get it to be perfectly flat with a full load. If you want, I can also add this as a modded version on the original post. Thanks again!