A small length of cork strip or a piece of cork stopper with a hole cut out should fix the briar extension.
Difficult to say what the problem is with the briar extension and stem without looking at it
Hopefully a new push-pull tenon will suffice. Having to refit a threaded tenon can be a difficult job without the right tools
Difficult to say what the problem is with the briar extension and stem without looking at it
Hopefully a new push-pull tenon will suffice. Having to refit a threaded tenon can be a difficult job without the right tools