2000 4.0 wrangler. Just replaced all o-rings, schrader valves, orifice tube, compressor, and receiver/dryer. Flushed system and pulled a vacuum. Let it sit for 30 min. to check for leaks and it held fine. Charged with 1.25 lbs. r-134 and system works. My problem is low air flow and around 65 to 70 degrees out of center vent. It is no colder when first cranked up before engine is hot, so I don't believe the blend door is the problem. What causes low air flow, blower is running hard but you have to lean toward dash to feel air flow. Any suggestions will be appreciated. Thanks