My whistle is fine. I don't have to blow it too hard to get a good loud sound out of it. Maybe yours is blocked or something?

As to the compass, there is enough metal in the kit to keep it stuck to one position. If I had to say there was a weak point to the kit is is probibly the compass. Everything else was exactly as a expected in my two kits, the compass's were just a little slow. Maybe from being packed close to metal?