Well Pauline, I haven't had any external leaks with mine, but I have heard a lot of others complaining about the oil in the A/C. Just got back last night so I'll take off my A/C first and inspect for anything unusual. I'm almost positive I'll need to add oil. As far as you having oil on the belt or rear wheel, check your oil lines. My friend's 05 Roadster had loose clamps on his right under the oil tank.
I am thankfull for Springers advice and directing me to the recent threads. Being an aircraft hydraulics mechanic myself, the valve seals he suggests makes a lot of sense and helps with the head scratching if I don't find anything else wrong.