I know there is not a lot of KILO users out there and have seen reports of KILOs running really hot. I used mine at a gig last night and the amp was very hot (hot to the touch). I was driving it harder than other gigs but have noticed that it was running really warm recently at practice. I have the KILO in a 4 space Gator case. I have an open space and vented grill in front. It also started to emit a strong smell of hot wires/circuitry that had me worried. Again it started to smell at a few practices but I had been using a different (and much lighter) amp recently. I did search and see that there are a few threads that talk about the heat issue with the KILO. Some said this amp runs really hot. I saw a reference that this amp can and will get very hot? But not sure. I'm going to check the fans better at home where it's quiet. I'm also going to call Hartke tomorrow and see how hot the KILO should get. My questions are: 1. how concerned should I be? 2. how hot is too hot? 3. should I take it out of the rack? is there a recommended rack? 4. Is there a better fan(s) for it? It's a great amp and apart from the weight it delivers the power and tone that I want. Any help or thoughts would be greatly appreciated. thanks.