New miner here: Any tips to reduce the amount of fire?

https://i.imgur.com/63aQ0xq.jpg https://i.imgur.com/KUonBNi.jpg

So I'm new to Crypto, only mined 300 Raven coins if that. But since it's winter in Australia, I figured I'd rather run a heater that pays me money.

Everything was going pretty well, until I got back from work today to the acrid smell of much too hot plastics. It's a 1200W PSU so I'd expect it to have good quality connections…

Anything I can do about this?

Build specs: i7-6700 running two Radeon R9 295X2's (4 GPUs total). 1200W Antec PSU for the system and primary card, 750W Fatality PSU for the secondary card.