I recently bought a V tail flat bat and want to set it up correctly. I see by the instruction sheet I can go with a 6 oz. tank. The instructions indicate that it should be mounted on top of the fuse directly behind the engine. Can it be mounted inside the "bat" or would fuel foaming be a problem? I have no clue as to what size engine I should use, got a couple of OS 40's (FP & SF) too heavy or should I go smaller say something like a 32 OS? And last but not least, there is nothing on the info sheet that indicates any type of CG..any suggestions? I want to do this right so any help would be appreciated.