Hello jlachow,

I’m getting @ 7700 RPM on my set-up.
Idle at @ 3000 RPM.
I have the rattling sound like you’ve explained, but mine happens only in flight.
When the engine is running at the ground no sound at all.
We thought at first that the pipe was hitting some where, and we had a look, and doesn’t
appear to be so so. That I’ve thought it was the elevator pushrod hitting inside the plane.

Could you explain more precisely what I could do.
I’m using a JR XP8103.

Thanks in advance for the info, it will be greatly appreciated.
Danny