For those who'd like to watch the installation process of fitting a TrackPack, this recent video of Ricardo Velarde working through the process at his home in Park City will be of interest.
In a relaxed and conversational, real-time demonstration, he works with an un-medicated second-year hacked tiercel peregrine that's only experienced tail-mounts.
He also demonstrates the utility of the new "Preening Tool" he designed which is now included with every Marshall TrackPack sent out this year, the 10th Anniversary of the TrackPack.
Hopefully, this helps those interested.
RB