I think all of them are simply importing VN rebuilts. With random spare parts salvaged off warranty returns.
At least that was the case with the long-gone wholesaler in Northern California. They had been moving at least 200 tractors/month before their warranty returns overwhelmed them.
I asked if they could refurb my YM240 - no. No work done on site. They were simply the link between relatives that owned the VN factory, and their US retailers.
I think these US refurb dealers are similar, sales but little service. (Except Fredricks of course).
These US dealers might have parts salvaged off a warranty return, it's worth asking, but it will be random luck if that hood turns up.