Scale length = 2 times the distance from fingerboard side of nut (or centre of zero fret) to centre of twelfth fret.
Distance of bridge saddles from nut (or zero fret) will vary slightly from scale length (as given above) due to differential of intonation on each string.
Fender Precision, LaBella 760FL strings, foam.
NS WAV4 EUB, can't remember what strings.
Both straight DI.
One overdub on Lakland Skyline Decade, GHS Precision Flats, no foam, also DI'ed
Wouldn't 'My Love' be Denny Laine on bass and McCartney on piano?
As for out of tune, I'll have to listen to it.
EDIT: The studio version does sound dodgy.
I didn't express myself very clearly. I should have said:
Before you set the witness point at the bridge saddle, relax the tension on the string and let it settle before retuning and then setting the witness point. This avoids a twist in the string that will prevent it from ringing properly.
That is one way in which a twist can occur. Always wind the machine head and don't twist the string around the tuning peg by hand.