As the others said, just tape up where the bearings/seals go to ensure no powder goes there, that stuff can be a nightmare to remove! and then tap to holes prior to reassembly What colour are they going to be? 
TBA, Stainless extractors / drag pipes, 65mm over forward controls, Thruxton needles, 904cc, head ported, lowered 1-inch, Console removed, relocated battery box, Australia.
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