No problem anymore! It’s called winter in Ohio! 😂 Kidding aside, I have removed the heater and replaced it with an inline duct fan, to pull cool air from in front of the radiator and blow it into the cabin. So far it seems to work well, but the only drives have been in 60 degree temperatures. It’s a little noisy, but at $25 it seems to be worth the noise. We will see how well it does when it gets warmer. Also, I think that part of my problem was the greenhouse effect of how much closer to you the windshield is compared to most cars. I believe that sun heat is a big part of what I was feeling. I may try a Window film with UV protection. Preferably one that isn’t too dark.