410 and 410R really is 近期佳作之一 in EP 4WD class, especially 410R for its price with some upgrade parts! I think the main reason to make this car so successful is because the car not only brought out some great new concepts and also those concepts work!
Spur potector: The issue was the alinement that I can understand..
Drive shaft: can be caused by shippping damage or other things, but this seems to me that the shaft is not strong enough...and. the potector sleeve doesn't fit...
For motor, I have a spare 7.5t.... I will use it for now.