hi, i know this maybe offtopic, but i'm desperate: i'm from argentina and i have a NSR250 mc16 which i'm rebuilding. everything was going just fine until i got the engine running. it started beautifully but a pair of minutes of run killed one of the crank bearings (the end bearing at the clutch side) and i can't get the part number or replacement for this bearing. could you help me with this? all i need is the koyo or NTN part number of the crank bearings. i've searched thorougfully at the forums but got no data about this. thanks in advance. you'll be doing me a great favour if you could get this data for me.

Mariano.