Best adapters.
http://www.bhphotovideo.com/c/search?phd=4027947477&atclk=Lens+Fitting+%28Female%29_Nikon&ci=15293&N=4294205295+4103497122+4289371044
Best for the price.
http://www.ebay.com/itm/New-Mount-Lens-Adapter-Ring-for-Nikon-AI-F-to-Fuji-Fujifilm-X-Pro1-XPro1-FX-USA-/191573932136?hash=item2c9ab23868:g:Fy0AAOSwd0BVswe0
None will AF.
I had the 410. It was great for macro work, but was heavy and bulky. I prefer a good, high quality ballhead for what I do.
If you end up with one, Hejnar makes an arca-swiss conversion kit that I highly recommend.
They are suggesting that you are trying to a swap out a lens you already own for one in better condition? I would be pissed.
I would open up a ebay case immediately and return the lens. If the serial number on the lens doesn't match the receipts sn, you wouldn't have any warranty at all.
Actually the adapter should have a thickness of 26.8mm (Minolta flange distance is 44.5mm)
Any shorter, it will focus past infinity. Any longer, it will never focus at infinity.
How high of voltage? Most (if not all) Fuji x cameras are safe up to 300v.
I purchased a Wein Safe-Sync years ago but nowadays just use wireless triggers.