1982 Rolls Royce Silver Spirit

Air Conditioning problem
1982 Rolls Royce Silver Spirit V8 Two Wheel Drive Automatic

I have checked my freon level, by evac, vac and recharge. The rolls dealerin Md. Said the car holds 2.8 lbs of freon. The ac cools at 58 degrees ferenheight, and that is only about a 25 degree difference on this 84 degree day in Va. I have taken the center section out of the dash, and can see the blend doors shutting all the way. Is there another blend door in the middle or back side of the heater box that could possibly cause warm air to blend in.
Danny evans
September 9, 2009.

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