to loose yes. to tight, not really. the tighter it is the harder your trans will "kick it" into gear. <- i can do puns too! the kickdown cable should be located next to the throttle linkage. IIRC ill dig for a diagram later.
I found this thread too.
http://www.automotiveforums.com/vbulletin/t280785.html
talks about acouple tranny issues.