Jumping wagons 

A most useful video for modellers, raising what is arguably the most significant cause of poor running on so many layouts - the wheel-rail interface is so often not understood - so well done! 👍 Poor /reduced back-to-back dimensions and coarse wheel profiles will inevitably lead to poor and erratic running and upgrading your wheelsets is a most worthwhile step. Hopefully your running will now be much improved. 🌞 _Even the newest Hornby wheels are uncomfortable on Ewhurst Green's finescale track so get replaced (they can have a slightly shorter axle length). Romford wheels are a good replacement as are Ultrascale - who make conversion packs for many locomotives._ 😉

Certain interesting video for us novices, Colin. Well worth watching, short and to the point...cheers James 🙂👍

Thanks for sharing very informative and helpful best wishes Chris

2.5 wagons is expensive, but as you say, for far better running, it is worth it

Great video , I bought a new Bachman DMU that kept derailing and it was the back to back wrong on one set of bogies .

Sorry if this is an obvious question, but is it the back-to-back or the Depth of the Flanges. Older rolling stock was designed to run on a deeper rail. Sorry if I am teaching people to suck eggs.