I absolutely love this mod! It looks great, and it plays so nicely with the stock parts and other mods.
It looks like the Setesh CBC is not balanced quite right in terms of the Liquid Fuel/Oxidizer amounts. There's a bit more oxidizer in there than the stock .9:1.1 ration. Was this done intentionally? If not, might i suggest tweaking the fuel capacities to 4950 (fuel) / 5610 (oxidozer)?