I have an 89 lx, got it, heat didn't work. Flushed the heater core, worked for a few days and it started leaking. So changed the heater core (what a pain in the ass!) Now, it blows hot air, but seems to be coming out very slow. As if the fan is on one, when it's on four. I can hear the fan working, hard. Just isn't putting out a lot of heat. Ant suggestions?