Actually, I've worked out one player, I just have the wrong numbers.

Morgan Escare came for 2 weeks in March so was 33 I think. Had Sid twice.
Still don't know who 39 is.

Just had a look clubs official page, nothing after 32 apart from Fifita at 35

Ask WT Heritage, they will know

Don't think there ever has been a 39.
Taufua probably preferred 40.
The numbers filled up slowly, not necessarily in order. Originally, Fifita was an outlier at 35, but that was his number when he first arrived.

Wish I was....
But it's been a few years,,,,,,