Can anyone provide advice and examples of techniques for adjusting the back-to-back spacings of OO gauge British RTR locomotives? Examples would best include Bachmann steam and diesel locos, Heljan diesels and Hornby steam locos. I need to get the back-to-back to 14.7mm (as against the usual14.5).
Carriages and wagons are fairly easy, but locos aren't. Are there any devices on the market that can get the back-to-back evenly to 14.7 mm on locos?