The "Y" shaped ducting in my 1971 Elky for the A/C is much larger in diameter (approx 1/4") than the center vent tube that fits inside. As a result, much of the A/C that should come out the center vent, blows under the dash. Is this a common problem? Am I missing a piece in the Y duct? The A/C is stock
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1971 El Camino
SB350/TH350
12 bolt posi
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1971 El Camino
SB350/TH350
12 bolt posi