Question: the timing chain well the camshaft timing chain
The timing chain and the camshaft.

Answer: yes

Question: If this is true, it could at least partially explain why the number of pieces delivered per box is so much larger for the fourth and fifth quintile than it is for the other three.
If this is the truth, it would explain, at least partially, our problem.

Answer: yes

Question: Old-fashioned and sweet, you know, but scared to move round without a footman or a maiden aunt.
A footman or a maiden aunt would help with the fear.

Answer:
yes