Hi David, welcome to the TC.
Like Martin (xbally) I to have owned quite a few XBR’s over the years, 4 if memory serves me correct, I have an XBR street tracker two thirds built on my workbench at the moment. Unlike Martin I was lucky enough to buy a brand new back in 1986 and did about a million miles on it, great bikes (IMVHO)
There’s no specific thing that I can bring to mind to look out for. Just get out there and enjoy it if it’s running ok. If you come across any problems with it, I’m confident there will be someone on the TC site that will be able to help out.
Cheers, Michael