Ha , Noel great minds think alike, I did the same as you lined up all the cravens and noticed the difference in the bogies, I then swapped over wheels from an rpsi coach to a standard craven now
admittedly I only run my finger along the wheels, but I saw no wobble on the rpsi coach when wheels were changed then changed
back to original rpsi wheels and wobble was back, as I say I had no track to try this on but i saw a difference. Just to add still glad I got this lovely set of coaches and would in time like to see the
remaining coaches released. Well done rpsi.