[Elecraft] Why no doping of torroids in Elecraft kits?

[John Harper AE5X]

I was wondering if their is a specific purpose that the manuals for some
kits (including the K1) recommend against applying dope (nail polish, etc)
to the torroidal inductors and transformers. Sometimes to align a
transceiver or to acheive its rated RF output, the windings of the coils
must be spread or compressed. To prevent the windings from returning to
their previous position, I've always given them a thin coat of clear
fingernail polish and had never heard of a reason not to do this as the
coil's inductance reurns to its previous value once the polish dries. Just
wondering why Elecraft has a different "take" on this?

John Harper AE5X
Outdoor QRP & Lowband DXing: http://www.qsl.net/ae5x