The dryer is 10 years old. I replaced all 4 roller wheels. While I had it apart I also replaced the drive belt and the idler pulley assembly. Once I had it apart I did find 2 wheels that were very worn, (1 front, 1 back) which is what I believe the problem was as they were also very hard to spin. Dryer works like new now.
The repair video was VERY helpful.