I recently purchased a 1994 900RR with 47k miles. I had to some minor repairs to the body but am noticing on long rides, the smell of sulfer coming from the engine area. Smells a lot like when Cat goes bad on a car. I have not seen any leaks in the engine area or been able to narrow down the exact source. Anyone have similar issues?? Please post your thoughts. I have noticed this on short rides at city speed. Only at highway speed for longer rides (+25 miles)