95 240sx AC unit question

[hawkONE]

When ever i move the air temp selection from left (cold) to right (hot) the system constantly clicks. I'm told its the 'BLEND DOOR' motor.

Anyone have a comment on this and possibly have a picture or diagram of where this part is?

A local shop wants to charge me 375 to pull the entire dash out and fix the issue.

(The car has no leaks with regard to the AC unit but its getting HOT in Florida!)