My bike has just over 1300 miles on it, 06' 620 Dark. It has sat the last three weeks because the weather pretty much sucked...so this morning I went out threw on the leathers and backed the bike out of the garage, started it and went inside for a second. When I came back out there was a 3" circle of oil right under the filter. Keep in mind there has never been any oil anywhere under the bike. I shut the bike off, wiped the oil off the floor and the bottom of the filter. I checked the filter and it wasn't loose enough to take off or tighten any further by hand. The bike has not leaked a drop since but I am worried about riding it. Any thoughts.