Hi. I have been the happy owner of a Jandy AE-TI heat pump for our outdoor pool for the last six years. Now the electric motor that powers the fan is beginning to make a slight metallic noise in addition to the normal hum. It still works perfectly but I am worried that the bearings are beginning to deteriorate. Do I wait until it fails or should I take steps to source a replacement motor? Any suggestions would be welcome, particularly about the replacement motor. I'm located Southern Europe. Thanks in advance.