Kenwood BM250 "A sheet vibrates from day 1" Grrrrrrrr

Machine perfect except yes, but one sheet rattle that vibrates during kneading.
What strange is that it does not always do so. I managed to stop this noise thanks to a bit of "leg to fix". But good for a new machine that makes him not too.
He also has the will "beep" of the starting steps, adding ingredients and stop that are really noisy. Preventing night programming because we hear it from afar. But I knew I had read the reviews !!
Otherwise nothing yet ... I think there is better for the same price !! On your keyboard

Two years later ...

After almost two years the axis of tank is blocked. After removing the retaining ring that secures it in place, then WD-40 applications (penetrating oil) comes off the axle. And I see the damage done by rust. Diagnosis: tank off. And a tank costs 30 + 8 FP therefore half the price of the new MAP :(