Yeah, that's a bad sign right there... so if that's one of those Quantum drives, the head stop is probably just sticky goo now. There are ways to fix these things, with some probability of success. Charles did a nice right-up here:

https://68kmla.org/forums/index.php?/topic/23871-vintage-hd-stickysolutionlazymans-40mb-80mb-160mb-quantum-prodrive-els/?hl=quantum

It may be time for a new drive though, and there are options for that. SCSI2SD, or one of Charles really fast 10k drives, or even an older replacement. You could post a WTB in the for sale section. Compnurd or MacDrone probably have a bunch.