If your oil mess turns out to be the large diameter oil breather hose that runs from the front of the frame spine to the top of the crankcase just in front of the tranny, you might want to know this this:
When mine developed a leak just after I bought the bike last summer (97 1100 Sporti, i believe it's the same on a V11), I replaced it with a new one from MG Cycles. It split within 100 mies down near the bottom and MG Cycles replaced it for 1/2 price. The replacement also failed in the same spot within 300 miles.
So, giving up, I did a little research and found a reference on another website to a Ford heater hose that is supposed to work:
Goodyear Ford hose #63318. NAPA Item#: NBH10912 $55.99. The bends are in the right place, you just have to cut off a couple inches of the ends.
I don't have many miles on this one yet, but the hose is rubber rather than vinyl and has a fabric reinforcement molded into it. I don't see how it could be any worse than the original. Also, it's not that much fun to install.
Hope this helps.