Hey guys my first post here!

I've installed the new blockchain driver on my RX480 Nitro+ 4GB and having the cards running at around 25Mh for all 6 cards (thanks to Memshift Rom file from Anoraks. The readings on Claymore itself are coming up as 0 for all fans and GPU temps (GPU0 t=0C fan=0%, GPU1 t0c fan=0%.... etc) but I'm getting readings no problem from afterburner. Currently one of the GPUs is running at a steady 80C where as the rest of the cards are running at a steady 65C (all fans running at 100% due to GPU2).
I've applied the following settings to try and regulate the temperature through claymore but would they be working if all the information displayed on claymore is 0?

-tt 75 -ttdcr 79 -ttli 81 -tstop 85

1) Is it safe to run at this temperature or should I stop it until I get a fix?
2) How can I have claymore display the correct temperatures (is it the anorak bios that is affecting it?)
3) Does anyone have another bios they recommend instead of anorak? I've tried their overclocked bios but as soon as dual mining is turned on it goes over 1200w and my PSU restarts.