I just got my Thermosonic Thermoengine and I took the fan off of the heatsink. I was going to put a metal grill over the fan. Well I tryed that and when I screwed it back in they didnt seem to catch to well on the Heatsink. The screws go in but are loose and the fan will fall off. I got the HS/F from 2cooltek, the fan look different from the one in the instructions, did 2cooltek put a different fan on it that doesnt work correctly? I don't know what to do, anyone else have this problem?