My Motrax motor went for 2 days and it then the motor seized up. Yes I did have the right run in oil amount. I then did some research and found this page http://www.youtube.com/user/zbox70cc and blog http://zbox-70cc.blogspot.com/ I can also see others have had problem with these motors after reading through motoredbikes.com. Just thought you should know... 
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