Dryer runs great, no heat

Everything has been super easy so far. Replaced the heating element (super easy), the thermostat (super easy), and just replaced a fuse (super easy). Still no heat though. There are 2 more thermostats to replace, but getting kind of expensive. Not sure how far I should take it before just giving up. Not sure if I want to tear the dryer apart further. Any suggestions? The videos have been VERY helpful.