I recently had to remove the exhaust from my 2014 Beta 125. When I replaced it black oil dripped from the join between the expansion chamber and the silencer can. I replaced the O rings in the silencer which improved things a little but I'm still getting black oil drops from the joint all over the engine. Is there some trick to fitting the exhaust to ensure an oil tight alignment or am I doing something else wrong ?
Many thanks
Klutz