Bearing size for Certate 2500R Custom....

[rico.29]

Hello,
recently i found that my certate 2500R custom was less smooth than it use to be, i have to say that i fish in saltwater with it .
i found a bit of rust on 1 bearing: part n°74 (see http://www.mikesreelrepair.com/schemati ... e_2500.pdf).
so i would like to change this bearings for boca bearings, but i don't know the exactly size can you please help me?
and i'm not sure to get the right dimension.
thanks, Eric