Wow ... quite a few issues here but you've got a lot going for you it seems . Haven't got long so short and sweet ...
As above the priority is to sort out the probe positioning as described and stop handling until he's had a few feeds at least ( again as mentioned above ) .
Then ... How are you measuring the temps ??
Can't go wrong with a 13 dollar heat gun off eBay for taking random temps in hides / warm areas / cool areas and then those 4 dollar digital thermometers ( with a wired probe ) off eBay are fine for placing in the vivs where ever you please .
As to losing 8 grams and assist / force feeding !?!
It's far too soon to be trying assist feeding IMHO .
Leave it a week or so then whilst it's in a hide , dangle a WARM defrosted mouse / rat in front of the hide entrance , it may strike instantly but if there's any sign of interest simply warm up the mouse again with a hairdryer for 15 seconds and offer again IMMEDIATELY whilst it's warm , repeat as many times as needed . If after the first few attempts there's no interest just try again a bit later . I always feed in the evenings as the are nocturnal as you probably know .
I also believe in placing branches in the Viv as these Royals will climb every evening given the chance .
Good luck and keep us up to date !!
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