Around 18 months ago I reported that the COM of the 2x2 Hover Thruster was off-centre and that it could not be rotated or mirrored. Any vehicle made with this thruster has a COM causing listing badly to one side. I had a look at this thruster again recently and the situation hasn't changed. Using this thruster as-is makes any craft inherently unstable unless an equal amount of extra mass is added to the other side of the craft. D.
