The last time I was into the primary on my MK3 was 2013, about 7,000 mi ago. Thought it about time to change the oil and clean the bronze plates. What I found is what at first looked like a jellied mass of crap at the bottom and bits of the same everywhere. "What the hell?" What it actually turned out to be was, , the ground up remnants of a paper towel or two. Probably used it to minimize drip-age the last time I serviced the primary I more than likely left it tucked under the alternator. Remember this is a MK3, sprag, back-fire device, auto- tensioner too,,, and not a murmur in four years. This is the equivalent of a surgeon leaving a sponge in a person. I have a 1997 Triumph Speed Triple. If I had done the equivalent of this to that bike, I'd have had a smoking wreck in ten minutes. She's a tough ol' bird!