Tune it where it is

[Newton Hunt]

> says never raise more than 20 cents sharp or else risk breaking the string. 

Show me where Al says this!!  20 cents is 440 to 445.113 Hz.  I would
only be concerned if the pitch change went from 440 to 460 or almost
3/4 semi-tone.

The pitch or cents is not as important as is breaking % and elastic
limit.  If you are approaching 80 B% you run the risk of breaking
strings.  If the strings are old and on a high tension scale then
coming close to 70 B% puts strings at risk.

I think the quote above is a misquote or misunderstanding.  

NOT understanding some about scaling, tension, breaking %,
inharmonicity, friction and the relationship between cents, Hz or B%
places yourself at string breakage risk.  Understanding something of
these factors gives you more flexibility to do what you want to do
without the risk.

		Newton