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As Trig says it is hard to make a determination on the state of the crank from pics. However try this and see what you think.The centre mark in the main journals is where the oil groove runs, you'll see on the shell that it has a recess there to allow oil to spread across the shell, as this part doesn't touch the crank journal it doesn't wear it so if that centre section is higher than the rest that shows the crank is quite worn. Just because they are shiny doesn't mean they are worn, run a fingernail across the journal and if there is a ridge where it meets the oil groove then you'll have to think about a replacement crank.
Whilst there's no facility for regrinds you can have the journals micro polished. Not sure who does it, but Rick Partington of Classic Bike had the 400 he was building done. May not need it though.
Before completely giving up on the can, give S.E.P. in Kegworth a call. I gave seen them repair cranks that look like ploughed fields by submerged argon arc welding the journals, then grinding back to original spec, and the crank is then good for many years to come. Chances are the journals on your cam may respond to the same treatment, and may prove easier and cheaper than trying to source a replacement.Sent from my X6pro using Tapatalk