What was the vent temp reading? I find that "freezing cold A/C" is at best an anecdotal experience. You need to know the actual temp of the air in the center vents to determine if it's not blowing cold enough.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280