'91 AC problem

[RoryJ8171]

'91 Continental, converted to 134a several years ago at a shop. Copressor is working, system has a good charge, air blows but nothing cool is coming from the vents. I can feel the AC lines under the hood and they are cold. Anybody know of a possible vacuum leak I should check for?

 

[RoryJ8171]

A/C Problem

Ran the diagnostics on Climate control with no errors reported. Where is the A/C air blend door located? I think that is my next step.