Bobobobo

Screenshot I'm trying to do my first orbital reentry with a biological sample container, but for some reason, whatever part is connected to the heat shield will overheat during reentry from LEO. Since it always happens to the part attached to the heat shield, it seems like the heat shield is somehow transferring heat to that part. How can I fix this?

I've just started making prop planes and helicopters and I'm not very good at figuring out what angle the have my propellers at as my plane changes speed. Should I attach it to my main throttle?