Okay. I'm going to try to post this with thorough information. Remember buffalo guy that was at the castle. Well I believe he knew Kappy. If you go to rumble and watch buffalo guys captain america video all the way thru (it's long) you will learn that he is into the same Ascension stuff that Kappy was into. The same super soldier stuff. At the end of the captain america video he even brings up Kappy.
I believe the key will be found by digging into buffalo guy aka Jake angeli's stuff. I will drop the captain america video link here.
https://rumble.com/vc0zun-an-avengers-story-captain-america.html