my xigmatech also was troublesome. I installed whilst it was in the case, and it replaced a AC7. Temps were ok at first, but they shot up, and this was because one of the pushpins failed to stay seated. I always remove mobo , and check the pins are FIRMLY seated now. Never had a problem before, but these coolers get bigger, and like the post above, fitting the fan to the cooler does not enable the user to gain any decent access to see the pushpoints, or check them, whilst mobo is in the case. I wasnt happy with my xigmatech at first, but now its fitted correctly (doh!) its lovely and way superior to the AC7 it replaced, by some 18 degrees easy