While servicing my clutch of Hornby 0-6-0PT's, I noticed that they ran much quieter with the body off. Contacted Hornby looking for a possible 'paint the body interior' solution. Hornby went into denial mode saying that nobody else had complained and their boffins could find no noise problems, yet all those I have shown the comparison (with and without), agreed that there was a noticeable difference. I'm not looking to apportion blame here, just trying to find a solution. Have also noticed the problem with other makes, though not as much as Hornby. Seems to me the body acts as a magnifier, a sort of 'megaphone' effect. Anyone else have any thoughts on the matter, or more importantly, can anyone suggest a solution. A 'paint-on' liquid rubber perhaps?