Lhasa - Sanya and duty

[flyingtiger]

Hello bretheren

Several of my work mates planning a big bikathon from India up through Nepal, into Tibet and down the west side of China to end up at my place in Hainan. Coupla questions. Is there any specific information to be aware of about the China crossing point with Nepal? Are the crossing police user friendly there? Do you need to give them Budweiser, Pall Mall, and ladies' stockings? How long should it take to clear the customs check point? How long is the bike's visa good for? 1 year? If importing a bike into China to remain, how do they come up with the amount of duty to be paid? Do they have a Kelly's Blue Book for motorcycles? What could be expected for a 2007 KTM 525?

Thanks