Product review (5 stars): Did the trick!
Thanks to Google search, YouTube demos and Amazon I was able to: determine the possible causes of the screeching sound my dryer was making; learned which parts were likely the ones needing replaced; discovered all three parts came in a convenient replacement kit and found said kit on Amazon for $23 USD; replace the parts myself and save the cost of a service call, labour and mark up on product!

Feeling repairmanish!