possible tuning

[A440A at aol.com]

Greetings all, 
    Well,  I have just finished tuning this RX-6 for the fourth time in four 
weeks.  It is stable, mostly.  There was never any large fluctuations in the 
overall pitch, just a decreasing number of unisons that gradually became more 
stable.  
    My take on this thing is that there were rendering problems, probably due 
to the string plate contact points under the capo and/or the upper string 
bearing points directly in front of the tuning pins.  Each week there were less 
and less problems in stability, culminating today in finding about four unisons 
that had 2 or so cents in them.  I have to hope that the piano will now be 
able to survive a month at a time without calling attention to itself.  
     I lubed one of the worst offenders at both of the bearing points, and it 
didn't seem to make much difference.  I tapped the strings down at the hitch, 
and gently settled them at the bridge without noticing any effect.  I did use 
the string lifter,(a Straight-mate sort of thing), and it did send a few of 
the unisons crazy, but beyond all that, I think I just learned how much back 
and forth was required at the pin to find the neutral point in top string 
tension when the speaking length was at the correct pitch.  
    The customer told me today that the piano sounds better than it ever did, 
and was more stable than they had ever noticed.  I even got a regulation out 
of the deal, so it was a profitable day.   I believe we, as a group, have the 
ability to damn near bring up all the variables possible in a situation like 
this.  
Thanks to all suggestions,  
regards, 
Ed Foote RPT