Finally received the hangers today. So an update, since I could not find instructions anywhere.
Hanger is of good quality, comes with pins and a new top lever for the trigger.
Yes, you have to take down the Jewel and replace the top lever, not difficult if you are a bit mechanical.
Place trigger in hangar and gently tap the pins in, one took a bit more than gentleness, but everything fits.
Use the supplied bolt to install on the action, works great, trigger weight is as delivered from Jewel, and the trigger is crisp, the machining of the top lever must be precise.
Ok, now nothing fits on the stock. The back of the hanger is even with the action, while the Barnard trigger is not, so the Laminated stock needs to be milled, ground or, etc, close to 1/4 of an inch.
There maybe an issue after the stock is relieved with the fit against the trigger guard, I am sure the top of the guard will require some relief, and then we will see.
The trigger being back will improve the length of pull for this junior, but the stock work takes this project out of the drop-in category.