Cream Legbar, vs other eggs hatching, no pip for cream legbar

[HAMFAM41]

Hi everyone,
First time poster long time lurker.
I'm on Day 21.
i put in 18 cream Legbar, 3 Araucana, 3 Belgium D 'Uccle, and 6 pekin Bantams.
after day 14, i removed infertile left with 5 viable cream legbars (the reason for the hatch) 2 Araucana, 3 Belgium D 'Uccle, and 4 pekin Bantams.
So we are almost at day 22, NO cream Legbar have hatched or piped, all Belgium hatched, 1 Araucana hatch, 2 pekin Hatched, 1 pipped. I also put the Cream Legbar in first the others went in a day later.
Look ive hatched 2 batched a year for the last 4 years, incubator clearly works, I dry hatch till lock down, then add water at day 18. I hatch inside the house, I am in australia so have had some heat for January.
I did remove 1 Cream Legbar egg at day 19/20, it started oosing amber liquid, so alarm bells went off in my head and gently removed and disposed of.
IS it normal for Cream Legbar's to take longer? should i right it off as a bad joke, Lady has offered me another 2 doz free to hatch collected over the last week due to so many infertile. I'm stumped. the 5 looked good and developing I'm tempted to crack on and take a look. Any advice.

 

[McChooky]

The oozing egg may have contaminated the remaining legbar eggs. I would give them a couple more days.

 

[McChooky]

When I ordered 2 baby legbar cockerels from Murray McMurray with 13 standard size pullet chicks they were the smallest and frailest of all.I moved them to the corner and side of the brooder multiple times to prevent them being trampled.They struggled for 7-10 days but managed to pull out of it which was shocking