Yes, read tha forum rules. And use tha search tool. Welcome to FC.
This isn't rule-breaking, it's a new member struggling to understand how to post.
My mouthpiece is stuck in the IN position, Any suggestions?
That depends on how it got stuck. If it's just resin build-up, then you can warm it up with a hairdryer and it should loosen up.
When you hit Reply, the forum software places a copy of the post to which you're replying in the post compostion box. Don't hit Post Reply at that point, just move your cursor underneath the quote (make sure it's not inside the quote) and type your comment. Hope this helps.