Product review (5 stars): Two hours of simple work to save $250.
If your dryer is noisy, do this.  This will fix the problem.  Find a Youtube video to know where the screws are.  Working in a small space, the whole repair took about 90 minutes.  Be prepared for the inside of your dryer to be very dusty and dirty (the online videos all seem to be repairing brand new machines.  I spent less than $25 and two hours of time to save a $250 repair bill.  You can do this.