Snownoise

Is there a way for RF to support two engines simultaneously in one part? Like the new Soyuz engine from TantaresLV. It have one ModuleEnginesFX module for main engine and other for vernier. I tried to add second ModuleEnginesRF to config, but is doesn't work well... Also, does RF support upgrades in ModuleEnginesRF module? I want to make upgrades with increased ignition count for several engines.