Heat transfer in qrtz is different compared to the normal TPT qrtz.
Is this intentional or a bug?
It's not so much the speed but how the heat is distributed throughout the quartz.
These are some examples;
Your mod: http://puu.sh/1k5f1
Normal TPT: http://puu.sh/1k5gv
And, this happens too.
Your mod: http://puu.sh/1k5j6 (this slowly heats up then the corner melts off)
Normal TPT: http://puu.sh/1k5ll
maybe you should use some of my tpt ideas for your mod?