xiaoman1 

I am normally not a fan of gold plated parts ( I like anodizing because it is subtle) but I must say that the stuff posted here looks gorgeous! I would think any custom plater could do the work...in my opinion I think the parts either need to be new a carefully refinished. I have seen some stuff that wasn't ground/finished and to my eyes, it looks terrible.

I hope this is not a forum members, but it was over-polished causing a loss of detail and creating an uneven/wavy surface and good plater will be extremely careful with the first few rounds of polishing...not all palters can/will take this care. If you decide to go this route be sure to talk to them about what you expect. A good job will cost much more but the final result will be worth it, you pay for what you get., don't cut corners a poorly plated part will haunt you every time you go out for a ride.
Best, Ben