Greetings. I have had the compressor, drier, and expansion valve replaced and system recharged. AC blows from side vents and defrost bur center vents only a trickle now. Apparently not a real uncommon prob on this vehicle, but looking for some troubleshooting tips and advice.

Note that tis care is pretty clean internally (153k) so there is no visible gunked up connections or broken lines that I can see.

Thanks in advance for the replies!

Jeff