ticking

I'll talk in bullets to keep this brief. - I hear the ticking more from the right side (top?). The noise stops once the bike is warmed up but it occasionally comes back after ~30mins of hard riding (i.e. hard acceleration, not high speed). - The bike (M50) is ~15 months old w/ < 3k miles...

I have lived with this ticking noise for about two years now. A year and a half ago I let one of my local stealerships work on it assuming it was a valve issue. Valves within specs. they tell me and blame the noise on a possible loose heat shield. Long story short... Picked up my bike from...