I was wondering if anyone can help?I have a Sirion rally 2 and after two blow ups I would like to get the crankshaft re ground and use the .25 undersize bearings.i have the con-rod bearings sorted,but am struggling to get the part number for the main bearings.I ordered both sets of bearings at the same time.the con-rod bearings were fine but the mains have no tangs and the upper bearings have two oil holes not one.the part # for the wrong bearings are 11704-B1021-.I am currently throwing emails back and forward to the distributors,just wondering if anyone else had these problems?I did however manage to get an engine manual,which is nice!