Case separated

With the engine case separated I can get on with the main and bigend bearings. Being a total newbie at this i read the manual carefully to identify the bearing sizes. Most of the information needed is written on the crankshaft weights and conrods. All except one were not completely worn away. The bearing sizes are as follows:

Main bearings:
Case ID: B B B B B
Journal ID:A B ? B B

Acording to the tabel in the manual the bearing thickness is - 'Green' 'Brown' '?' 'Brown' 'Brown'

To work out the missing bearing I will need to measure the actual thickness, which i haven't worked out how to do yet, without spending cash on a measuring device (micrometer maybe). All the main bearings are marked with a dab of paint on the sides, but only the green one is still visible. The others have what looks like a brown dab, but i cant be sure.

Conrods are easy they all have number '2' and the crankpin ID is all '1' which makes all bigendbearings 'Green'

Will return with more data and info later.