I have Hornby's last model of Thomas the Tank Engine and a few months back it was on its last legs and the gear went square. I bought new wheels, a new gear and new motors but the wheels are gear set that works with Hornby's last model of Thomas are out of stock. I need some help. When I add the motor to the belly plate of the loco chassis, it stops the middle wheel from turning and it lifts it up off the track, though the left and right wheels stay on the track. Is this a problem with the motor or the gear. I have tried tightening the motor, loosening it and it still won't work. The wheels, including the middle gear set, move on the track freely when the motor is removed but the motor stops chassis from working. I am a young modeller and I have no idea how to fix it. Please help me. Thank you :) CJ
