Thanks for the replys.
The Oil Filter Adapter (part # 122-0320 or 122-0814) is what the oil filter attaches to on the generator. Under normal circumstance you'd never have to mess with it. In my case, on the RV I just purchased, the oil filter was improperly screwed on by the previous owner (cross threaded) so I can no longer get a good seal between the oil filter and the generator.
The good news is I did another search on google this morning using the part number and low and behold I found one on Ebay that just got listed for $30.
Definitely my lucky day.
Thanks again for a great forum.