印度采购需求：CPU散热器、风冷散热器、风扇散热器、液冷CPU散热器、水冷散热器、ARGB散热器

I recently purchased three kits of fans for my PC, including two reverse kits and one forward kit. Unfortunately, I've encountered an issue with one of the reverse kits - specifically, two of the fans are spinning very slowly and often fail to rotate at all. I've attempted various solutions, such as adjusting the fan curves and modifying their mounting positions, but to no avail. Upon closer inspection, it appears that these two fans are experiencing significant friction, as I can feel increased resistance when I try to spin them by hand, unlike their properly functioning counterpart which rotates smoothly. The fans were purchased from Amazon India around 25 days ago. I would appreciate your guidance on how to address this issue moving forward.