That's fine. Or you can do one wrap with teflon tape and cut a small block of pink foam to place under it.
Power cable connection issue, plug slightly sags and disconnects
heavier Power cables tend to not fit very securely so if there is a slight connection angle they no longer carry the power. How are you supposed to maintain a horizontal connection when they are so heavy???
Slight movement to a rack tends to cause the disconnection.
So I go back to the cheaper, much cheaper, much lighter and flexible power cord received with device and it fits really good.