In VT43 the noun _thahtie/sahtie_ 'pressure or force (to do something
against one's will or conscience)' is said on pg. 22 to come from etymon
_thakta-_, which looks like a verb. And I am surprised by CE *_kta_ >
Q. _-htie_. Usually _-kta_ > _-hta_.
On the next page, 23, the verb _th/sahta_ 'induce' is said to come from
the stem _saka-_ 'draw, pull'. Usually initial CE sV- gives Q sV-.
Is there any misunderstanding or misprinting ?
[It seems probable that by writing "_thakta- > Q. thahtie/sahtie"
(a reproduction of the actual manuscript note appears on VT44:23),
Tolkien meant to indicate that _thakta-_ (< root _thag-_'oppress,
crush, press' was the primitive verb from which the later Quenya
gerund/infinitive _th/sahtie_ was formed by addition of the ending
_-ie_, rather than indicating a _direct_ phonological development
of _thakta-_ > _th/sahtie_.
As for _saka- 'draw, pull', yielding both Q. _thahta_ and _sahta_
'induce' rather than simply _sahta_, this could explained if _saka-_
is interpreted as a Quenya verb from earlier *_thaka-_, rather than
assuming that _saka-_ is a CE root. Note that Tolkien did not mark
_saka-_ with either an asterisk or a root sign. The suffix _-ta_ added
to _th/sahta_ 'induce' does not appear to be causative per se (since
_saka-_ 'draw, pull' is already transitive), but rather extends or
modifies the sense from 'draw, pull' > 'induce'. -- PHW]