Whirlpool Wtw8800Yc0

Here is a link to another washer that makes the same sound http://www.youtube.com/watch?v=auE2a8ixk-A

I have a noisy Whirlpool wtw8800yc0 mainly noisy on Spin, very noisy (like an airplane taking off)

Checked underneeth no grease spots or water leak.

Did change the Tub hub assembly (Do I have to put any grease under any of these parts?)

If I turn the tub by hand I can hear somekind of light grinding ?

Also noticed that when i rotate the basket there is like a brake that slows it down.

Ran the diagnostic self test and all good.

Works perfectly beside the loud noise on spin, this wahser is just about 2 years old.

Any idea

How to differenciate a problem with the transmission, the coupler, and tub bering ?

Thanks

Last night took it apart and pulled the basket out to see if anything was stuck or blocking but all clear.

Denis

Denis