cooling problems and other stuff

alright, i've fixed most of the things that are wrong with my car, but every 2 weeks or so another comes up. it's overheating and i cant find the leak. i have to fill the radiator everymorning. going to flush the system this week. i just put in a new radiator, thermostat, and heat sensor. i have to replace the head gasket soon too. any ideas of what it is? i really don't want to mess with the water pump or the heater core but if i must, i must. it's an 86 lebaron 2.2 and beginning to be a big pain in my butt. anyone with an idea please message me back. thanks