I have an 04 FXDLI with about 6400 miles on it. Bought it used in April with 4100 miles. Last week I noticed a few drops (3-4 maybe) of oil under the left side near the back of the primary. It to appeared to be coming from the primary drain plug as there was still a drop of oil on the plug. Tightened plug a little, took a ride later and continued to see a small presence of oil around the plug hours after the ride. Started searching HD Talking for leak info. Realized it was not primary oil because it was red and therefore had to be transmission oil. I'm using Spectro 6 speed platinum in the tranny. The leak is very slow, I only get a few drops after every ride now and it's so slow it does not appear to be leaking when parked during a ride (like when my buddies stop for a beer, I of course never partake a Coors light draft like my buddies...) I notice it several hours after it sits in the garage - about 3-4 drops every time on the floor. I've tried to look under the bike with mirrors, lights and even got the back wheel up on a 2x6 to give my fat head more room. The bottom of the bike is that wrinkled black which makes it really tough to see anything or tell where anything is coming from. I do see a tube (I'm guessing a breather tube?) at the front of the swing arm but it appears to be below and behind the primary plug. I'm not freaking yet and plan to ride and observe hoping to learn more. Tranny oil level is fine from the 5K change out, haven't had to add any. Any ideas? Thanks, RC.