Getting very hot.... KX3 PA complaining

Will drop some shade over it but KX3 PA complaining about heat again (like in 6W) not running SSB with 10W now 8W.... I have put a 12V  8cm PC fan on and directing it at KX3.... PA temp dropping fast now.

I did not fit heatsink to this one, should have done that... ho hum.

Thank heavens SM7UCZ lent me the PSU as have the fan running off different one to the rig.