More tape machine woes: crosstalk in sync only

[RoadrunnerOZ]

Normally across a large board I’d expect 1 - 1 1/2 Ω maximum total plus of course meter lead resistance but 15 Ω is big. Maybe try 1 - 8, 9 - 16 see if they’re half and identical

 

[EmilFrid]

Will do!