I have a Kato HO GP35 (2015 release). Sometimes when running, it makes a rattling noise. This most happens when running in reverse. I checked thoroughly for any looseness in the shell or anything hanging down. It even happens when I hold the shell and just spin the wheels in reverse. It seems like the noise comes from inside. I have not taken the shell off yet (kind of hesitant). Sometimes it goes away for a few days, then returns. It often seems to "begin" if I run it in reverse at a faster speed. Then it will continue rattling in reverse for quite a while. Eventually it goes away again. Anyone run into this with Kato GP35s? Particularly the newer ones? Any advice? Thanks.
