To degum or not to degum

I recently purchased a very scarce mint Italian
stamp that completes a difficult mint set - at long last!
(the Victor Emmanuel II set of 1863).

The stamp has clearly been regummed, and was purchased
below the Sassone 'without gum' price.

With a glass the gum is clearly visible on the front of a few of
the perforation teeth, and there is some on the front
of the stamp, but none of this is visible to the naked
eye when in the Hawid mount on my album page.

The question is, should I soak off the 'added' gum,
or leave it there?

--
Tony Clayton
Coins of the UK : http://www.coins-of-the-uk.co.uk
Sent using RISCOS on an Acorn Strong Arm RiscPC
.... Last yur I kudnt spel modjerater now I are won.