Few pictures for you l/h bearings 170k discovery r/h is 100kish but not 100%, to be honest, the green is a coating worn through as you can see, also look at the edges you can see an equal marking to prove they were fitted centrally, well almost, this is where the lack of tabs comes in, not to stop spinning to centralize, also included pic of in situation pattern of wear is usually the same, also micrometer pic of one thin area of crank, many thanks for crank info looking into it would appreciate when I find one if you would give me your opinion before I pull the trigger all the best