I've got a fair amout of spares for the Jewell's and get them up and running for people, when possible. On the models with a safety, the small articulating triangular lower lever can be broken when a primer is pierced. This lever isn't in the BR series triggers. See pic for the articulating lower lever.
Not trolling for 'business' but I'd be happy to take a look at it for you at no charge. If it's not fixable, the only charge will be return postage. If you want to go that way,
don't take it apart...just send it as is.
Good shootin'

-Al