Hornby hoppers don't like guagemaster track
 

I have completed and ballasted most of the trackwork on my OO gauge attic layout, and am happy with it. It's Gaugemaster flexible track & PECO points, which most of my stock negotiates with ease. However, my rake of 8 Hornby hoppers is constantly derailing, particularly on curves and points. I'm not sure if it's to do with the flange depth of the Hornby metal wheels, or the back-to-back settings, which I have adjusted to no avail.

Anybody had similar problems or have any insight into the best replacement wheels for general running? - I suspect the wheels not the track are the problem.

Thanks.

I've had problems with getting my Bachman Warship to go through Hornby points.....it doesn't help with your problem, but I thought I'd throw it into the mix.

it could be to do with the sharp ness of your curves

i had some hornby modern hoppers and they wouldnt go round train set curves, i dont know if you have tight curves but this is a possible explanation