Welcome to the forum! Stop by our "Introductions" area and say "Hi".
For some reason, I could not view the video.
It sounds like you have some other parts worn and may need replacement. It could be the hammer. Not knowing your experience level, I would suggest that you get with a local gunsmith.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)