When working on removing the blend door motor make sure the temp control is in the centered position or it will loose its indexing. This is a site I found a while ago with a cure for broke blend door. It has good info also. They say that you can open up the motor and recalibrate/reindex it if it has rotated out of spec they will include info on how to do it in the directions of the parts to fix the door. http://www.heatertreater.net/Dodge%20Ram%2095-02.htm

So my heating issue doesn't appear to be the blend door assembly either. The motor was working fine... I could see it turning back and forth when moved the heat control cold/hot. But I was thinking maybe the connector piece was broken and wasn't moving the door all the way. Finally got an offset screwdriver and got the motor assembly out of the way today and got a good look at the plastic connector.. it's fine, not broken that I can tell. I tried manually turning the door back and forth and it seems to be okay as well. Opening and closing fully.. at this point I'm thinking the heater core must be plugged up a bit or something. Truck temperature is at 190.. but on full hot I'm only getting lukewarm air. Already replaced the thermostat the other day..*sigh*.. It can NEVER be the simple fixes can it?! haha

The heater could be blocked with mouse nest. Have you dropped the fan motor, in the passenger's footwell. only 3 screws as I recall. In the truck, you can block small critters from the cowel area by shoving steel wool (I used SS pot scrubber) up behind the hood hinges where the cowel drain is. It will still drain but keeps critters out. After all that, my coupler was not broke either. It is was, I'd turn a sleeve on my lathe & use a vice to press it over the coupler. I've had plastic handles crack on shut offs in my camper... I couldn't get direct replacement valves... so I repaired the coupler on the handle & still working fine.