I must be absolutely blind today because I've not seen this question asked and if it has been asked, I apologise for asking it again! Is there some means of integrating this into the stock tech tree in a way that doesn't exclude other parts mods? I was mucking about with B9 and KW Rocketry yesterday and it seemed those parts can't be integrated into the research tree when using a custom research tree like the one that integrates KSP Interstellar. As much as I love KSP Interstellar, I do love some good, old-fashioned rocketry and would very much like to get those mods working together!