I have followed the discussion on Pin-Tite with great interest, and that
last treatise from Craig settles it for me.  His arguments have embodied
logic, impartiality, and experience.  The missives from the PTG on the
other hand seem to me to have a distinctly elitist flavour.

To sum up:

We have at least two very experienced, respected, and successful
technicians who have studied a specific product carefully, and assessed
its effects over many years.

Opposing them we have members of the Piano Technicians Guild, which
whilst itself not overtly endorsing or proscribing any particular
product, nevertheless claims by default proscription of all pin
tighteners in the absence of any specific endorsement.  Compounding
this apparent duplicity is the fact that they happily accept the revenue
from the advertising of such products!  In my book this itself amounts
to endorsement.  Any self-respecting organisation would not accept
advertisements for a product proved to have damaging effects.  Or am
I being unreasonable?

Therefore I shall use Pin-Tite in accordance with the guidelines provided
with the product, and armed with the considerable knowledge displayed by
Craig and John.  I shall apply it to an old, previously untreated, fairly
ordinary piano and then bring the instrument up to pitch.  In six months
time I will invite a very experienced tuner to assess the instrument's
condition.  See you then!

Roger Waring

 [ Your conclusions, based on the information presented to date, are
 [ reasonable, Roger.  I hope your experiments are fruitful and
 [ successful.  Keep us posted!  -- Robbie