Thank you for your attention.
Yes, I do have KJR.
I am not sure if I understand completely, but the picture attached is with some questions.
I tried but even worse result. I realize the engine can't sustain the weight, but I can't find a better way to mount this, Do you know of a particular part that may help?
Strange thing is, is when I used a KW interstage fairing (it opens like a flower, and has a bottom, middle and top node), without an engine mounted it worked fine, but once I add the Merlin, wobbly again, even though the engine wasn't supporting anything (attached it to the middle node). I don't have a screenshot on that cause it's real late for me and KSP just crashed.
Thanks again for your help, it is much appreciated.