Is the horrible noise before inserting a disk or only when a disk is inserted? That would be the difference between a failing motor versus the read/write heads catching on the disk. Other causes may be more likely.
Check the link Modem7 posted in post 8, there is some discussion on the resistor. Although I am not sure if the ohm values are the same.
Thank you @offensive_Jerk for the search.Here is some for sale
Digikey