I’ve already fixed the problem, but wanted to post in case anyone else had the same issue. The dryer was not heating (heating element did not come on).
The thermal cut-off tested bad (open) so I replaced it and the hi-limit thermostat (the two parts come together as a kit). I’m not sure if the parts were bad or something made it overheat. The venting is fine and I don’t see anything else wrong.
Anyway, it’s been running well for a while now.