Brandon,
I bred the Broad heads in the 80's (just by housing them together not by trying or perhaps gravid when I caught them for all I know, long time ago).
I can't exactly remember any data from the egg incubation for the broad heads, I did use the standard for colubrid eggs.
(didn't write down data)
I do have info for the Fire Skink I found on my old index card system and I had them for over a year before I tried breeding them.
Here is the info straight from the index card.
4/14/02 Riopa laid 4 pearly white eggs. Expected pip May 26th, maybe slightly longer due to lower incubation temps. We shall see! Temps used 80-84 F
5/27/02 One pipped and It's out.
5/28/02 Another pipped.
5/28/02 opened one/still attached to yolk, detached stopped bleeding, should be ok, will let other go one more day/right next to other and probably still attached. Changed my mind and removed fourth also still attached, slight bleeding, stopped immediately, prob would have hatched tomorrow/ All four perfect. One has eaten already (spider).
Sorry this prob will not help much and the info is not the best I have recorded.
I did use a shelf in room where eggs went from 80-84. I used no rotation (didn't know about info you stated).
I used vermiculite and sphagnum like I use for most species.
(note I did brumate the riopa for 2 months before breeding at 60 F)
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Roberts Realm Of Reptile Research
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Thanks,
Frank Roberts

I opened my mouth and out flowed a melody black.