Was the issue described above solved as suggested with a sc coupler or a new snout?

Seems I am experiencing the same "growling" sound as described above. It sounds like gravel rolling around inside the blower at idle. When you get on the gas a little, it goes away. It does seem to be getting louder over the past week or so.

It has become very annoying, and I am worried I am now damaging something in the SC. Is this the case if it is indeed the coupler or snout?

The car has 50K miles. Is this common? Are there any TSB's on the subject?

Any advice is much appreciated.

Thanks
Dave