i5 4670k overheating on stock clocks and h60 (maybe because of trapped air?)

[Spectroplasm]

Hello!
I have a mini-ITX rig where my i5 4670k and a h60 (2013) fits very well. It worked flawlessly for 3 years now, but yesterday it started overheating. It idles at almost 70ºC on stock clocks. When I first noticed this, I tried reapplying the thermal paste and nothing changed. I also noted that one tube was way hotter than the other and searching the internet I found out that it could be some air bubbles trapped inside.

It could be, since I moved the day before yesterday and could have shaked my PC which led to those bubbles. Gaming (Diablo III) it gets to 100ºC easily, and with my PC turned on, shaking the tubes instantly drops the temps to ~50ºC. It's shocking the difference only by shaking the tubes.

What can I do to remove those bubbles if it really is the problem? If I shake it, temps lower, but when I stop, after 5min temps rises again. My radiator is mounted exactly as it always have been and no problem until yesterday.

 

[geofelt]

At idle, you should expect 10-15c. over ambient from any cooler.

You might want to contact Corsair help forums or customer support.
If there is a way to fix bubbles, they will know.
Possibly, they will arrange a RMA exchange.
What is your case?
small ITX cases are about the only place where I think an ALL in One cooler makes sense compared to air.

 

[Spectroplasm]

It's a Cooler Master Elite 130.
It worked well for years. The air coming out the radiator is not even warm, I think the water may not be flowing as it should. The tubing is really hot in just one fraction of it (next to the pump), rest is pretty much ambient temperature (currently 28ºC).
Should I switch to stock cooler in the meantime? I'm afraid it'll damage the CPU.