Carb Needles

Hey Group,
I know this subject has been discussed and cussed many times before, but I  
can't seem to get it right.
Running a 1380 with VP-7 cam, and Vizardized carbs and manifold, I can't  
seem to get the carbs adjusted quite right. If I adjust them to a nice idle, it 
 
leans out on acceleration. If I adjust them for acceleration, it idles very  
rich. Any ideas on needles to start with? Also, has anyone customized the  
profile of the carb needles?
Mike