Well I seem to have better heat now when driving - but I have a similar problem to many people out there that say they have low/no heat at idle.

Basically when you stop and sit at a light, it starts to blow cooler air.
I noticed that if I have the internal fan on a lower speed it seems to stay hotter.
It really seems like the flow is reduced in the heater core... I hope its just cause its plugged a litte.

Gonna try another flush... hesitant to use "stuff" in there and ruin the core.

Chad