Lal, Can you explain how Pīḷana works at cittā level?
I think Comparison of upcoming PañcakKhanda with PañcaUpādānakKhanda plays important part in this process of Pīḷana.
As DanielSt pointed out in the analogy, As soon as there is some PañcakKhanda which is liked or seen as pleasurable, mind starts to get vexed. But that is bit vague. So, it would be good to understand this at citta level.