I did not use any engine mount plates. I used the LT-1 Landing Struts with same ship to test. I had these mods installed (Chatter, Kerbal Alarm Clock, memgraph with its dependency from CKan & Joint Reinforcement installed). Started uninstalling them one by one and when I removed KJR then the bounce was fixed. So I tried installing KJR Continued by itself and still had the bounce. Removed it and bounce fixed. So I then reinstalled all those Mods again without KJR and the bounce was still fixed? So I concluded KJR was the cause of it?
Thanks,