I have a major problem, I either didn't install the mod correctly, or it's broken for me, I don't see a separate category for your parts, neither do I see a configuration button, I'm running KSP 1.2.2 Windows Steam version and I extracted MagicSmokeIndustries, and TweakScale into the GameData file, together with the Model Rework & Expansion, if you need more information I'm glad to help