Which VTF Scale are you using?

Ortofon DS-3 worked better than my Clearaudio or Chinese job relabeled by about a dozen companies (e.g. Acoustec). 

This one is very nice. It's what I use, although I also have the Shure. 

https://www.lpgear.com/product/JELCOSG1.html

$6 cheap digital scale manufactured by a CCP company. 

Been using it for 3 years. If it goes bad, guess I’ll pony up another $6.....

+1 on Ortofon DS 3 digital scale. Utmost accuracy and reliability. 

https://www.ortofon.com/ds-3-digital-stylus-pressure-gauge-p-708-n-3444

+1 wolfie62 
And it measures just fine .. bundle pack x5 for a modest $20 . EBay... 
Gave one to a friend, another to my brother and use one my self.. 
Used it to setup my brand new zyx ultimate 4d x on Saturday night..=)