I live in the US and need to get my printer back up and running sooner rather than later. I'd prefer not to have to wait for the Fan to get through customs. There is a local store that sell 12v 30mm fans I'm not sure if it is powerful enough to cool the cold end. Other than running the printer are there other ways I can check? Other stats about the fan I can compare to make sure it will do the job? Thanks in advance for any help.