I've got a 92 seca 2 with 13k miles. Just recently I've noticed a ticking noise when I'm engine braking in any gear. If I engage the clutch while engine braking, the noise stops. I can't really tell where the noise is coming from. I think it might be my chain, it's pretty loose. Today I washed my bike and lubed my chain, but the noise was still there. So other than the chain, what else could it be?