I've had the same resizing visual glitch with inline stuff before, I ended up refraining from resizing things like decouplers and sas. the legs though look like maybe you used the translate tool in the VAB without switching your placement mode (forgot what it's called, the one that toggles with the "C" key). if it is set to snap to surface it will reallign almost anything to what looks like a wierd secondary collision mesh. I figure you may have resolved all this after a month but i figured i could respond more for other peoples benefit who are having the same issue.
