Just purchased a preowned Heljan Class 17 Clayton from Hattons the green D8600, they did say that the motor was noisy but I went ahead and purchased it. Done a 3 hour running in at half speed and plenty of lub to try to quieten the motor to no avail.This morning I decided to fit dcc decoder to try it out on my layout after ten minutes running at half speed total seizure of motor, and the front left hand front window fell out. Heljan quality going down the tubes Clayton going back to Hattons, hope there 0 gauge is not the same for 2021.