Hey all, how do I select the different configurations, or subparts, for each main part? I just looked through almost all 76 pages of this thread (very time consuming...) and haven't found any one who had similar problems. Basically, I right-click on the part, nothing happens. The mods I have are: this new B9 update, MechJeb, Environmental Effects, Rollkage, and MagicSmokeIndustries. Thanks! PS-I did find something about removig RPM but it wasn't clear on whether that would help or not. PPS-A solid solution to this problem and proper instructions for selecting subparts should be in the first post with the announcement, just saying...