Hi i have been having an ongoing problem with the locomotive derailing, i run blink bonny over the same track with no problems but night hawk only travels a few inches and the front bogies derail it has been back to hornby three times. Royal mail ,dpd and hornby have had the engine more than i have ,i now have had an email saying the hobby is good for your mental health is someone having a laugh. I am now waiting to hear from hornby.