Thanks very much for your response - I thought for a while you were managing to keep your 400Mhz miners under 60°C in a warm ambient environment! 
Running @ 350Mhz in a warm environment I'm getting temperatures of about 68/72°C. HW errors = 0.0012% which I think is pretty acceptable judging from your response. I would like to overclock to 380/390 however my only concern is whether or not running the miner at these temperatures, and higher, will affect the miner's lifetime..
Keeping HW errors low is a good sign that it's running well, but surely 70+°C couldn't be too good for it...I'm not sure..
Edit - I will send you a small tip when I get home, really appreciate the models!
Running @ 350Mhz in a warm environment I'm getting temperatures of about 68/72°C. HW errors = 0.0012% which I think is pretty acceptable judging from your response. I would like to overclock to 380/390 however my only concern is whether or not running the miner at these temperatures, and higher, will affect the miner's lifetime..
Keeping HW errors low is a good sign that it's running well, but surely 70+°C couldn't be too good for it...I'm not sure..
Edit - I will send you a small tip when I get home, really appreciate the models!
anytime you do anything to anything beyond defaults you will affect the miner's lifetime
. why are your temps so high at 350 you should be more like 55 to 65 if that at default settings even with this mode on it unless your adding on the 20 + degrees.
Just a thought i have no idea how hot it is were you keep your S5 mining .
I bought a set it worked ok for me i guess, i ended up taking it off , my fans increased in speed, temps went up , the idea is very cool but unless it fits just right it might not work right that's the hard part having one made that fits right. I don't have a 3D printer yet but plan to get one of the cheaper ones for home use soon .