Got it back together and all works well. Only time will tell how long this grease holds up. I'm certain the OEM stuff was petroleum based too, so if or when my lithium/teflon stuff becomes an issue, I will undoubtedly be long gone.
This was definitely a learning experience. One lesson learned: if you have to install the lock plate by tapping it on with a hammer, you are doing something wrong
Won't do that again.