Well, we noticed that the clothes were coming out of our washer still wet when wash cycle completes. After a little checking I've found:

* The washer appears to run other cycles correctly
* The washer appears to be draining properly
* Agitation appears to function properly
* If you unload the washer, set to spin, it starts slowly but will spin, speed seems a little slower than it should be though
* You can hear the motor running as it would normally in all cycles
* Washer stops normally if you release the lid switch

When the tub does start to spin, you can apply relatively light pressure and stop the tub. With a load of clothes it does not seem to spin at all or spins very slowly. I have seen posts here suggesting that this could be a problem with the drive block but I have not seen anything suggesting what to look for when inspecting it.

So, my questions are thus:

Does this sound like the drive block?

What should I look for on a drive block to determine if it is my issue?

What should I check next?