So Why Is It Always The DPS Who Withdraws?

[Pintsized]

So I've just done Navel (Story) for the first time and it took FOUR attempts to get a party through Duty Finder, every time it was one of the DPS who withdrew?

I of course signed up to this Duty specifically (as Healer) but I am assuming normally the other three players selected for the group are all using Roulette. Is it possible for someone to 'know' before hand the duty the Roulette has selected so they can drop out even before starting?

Given the fact I often see DPS complain about long queue times, not without reason I'm sure, I'm bemused why so many drop out when the queue pops.

[edit]

This is not at all the first time I've seen this effect, but it's certainly the most 'failed' pops I've seen in a row.