fac question

[A440A@AOL.COM]

Wim writes:
 
>> I have also been told that on a pitch raise, we should not use the FAC
>
>> numbers to do a regular tuning, that we established for the pitch raise.


Greetings, 
   I have never seen the FAC numbers change fast enough for this to be a 
problem.  Six months after a 30 cent raise, though, I have noticed the FAC 
numbers to come down, a little.  
Regards, 
Ed Foote