Ordered the rollers from AppliancePartsPro.com and with my wife's assistance (mostly to run the video on her laptop and keep the screws in order), and followed the video instructions. I would have had a difficult time with the replacement if not for the excellent video. The video is the reason I bought from AppliancePartsPro.com even though the rollers were available cheaper elsewhere. I did not move the dryer because it would have taken hours to reseal the exhaust duct., so I blindly took out the top screws. Everything else went well. Upon reassembly, the top screws were a bit of a challenge. Two of them are on the floor behind the dryer, but one is in so the top isn't going anywhere.
Anyway, finished the job, started a load of laundry, and the dryer is once again quiet. Went to take a shower, and... no hot water. Too bad that AppliancePartsPro.com doesn't do hot water heaters, :(