Boy, that would be a small tick with expansion if it was the exhaust collar nuts backing out. The chase is on if you find a loose nut. I bought those short 10-12mm open/closed end wrenches for the tight work like the headers.
If you're hearing those ticks thru the fairing, and it goes away, think of it as tolerance noise. I explain 3 tick variables, see who it is?
1. Header Tick: You came up with that one and when expansion sets in, the noise goes away; that's an ever so backed out collar with nut still intact. No mechanical effect per say is the air pressure finding the fastest escape route.
2. Valve Tick: Back to my experience deliberately causing a tick on the valve lash to occur. Mechanically it is too tight meeting the valve heading back to its seat. The bigger gap and it would be away from it. Tick will occur hot or cold and will never go away. Adjustment needed/rechecked.
3. Piston Tick: This is where the the piston swaps sides on the up and down strokes. So think lowest part of the piston is the skirt. That's the tightest point. Paper thick, give or take another sheet or less is that clearance. When there is damage there it beings to snowball. The rubbing up and down removes that tight clearance and this tick begins to happen. It's not going to last for long and plus 80 mile on the first post, then out for another ride, you'd be heading home in a flatbed. Supreme mechanical damage.
Kind of relaxed about the mechanical(s)? An exhaust nut chase is one, the tick and goes away is not a tight valve, and you have too many miles for the snowballing effect to seize that one cylinder side. Each time you go out it's not puffing oil out the exhaust, plus you're not adding oil to the level. It's either 1 or 2 if you ask me.
Tormenting the motorcycling community one post at a time