I must have been lucky....
In contrast to your experience (Egrady) everything happened strictly "by the numbers" for me.
I found that once the arm was levelled for VTF, the ideal mid-range setting of force for the Lyra Delos was perfect.
Whenever I change the VTA to suit a given weight of disc, I optimise for the best sound then find that, coincidentally, the bubble ends up bang in the centre. Nice when that happens.
My previous cart was the Music Maker III whose instructions specified that the cart face should be strictly perpendicular to the disc surface for best VTA. The arm I was using at the time, a Linn Ittok LVII, was not helpful for precision tuning of VTA (if you unlocked the arm pillar to make a super-fine adjustment there was no guarantee that you'd actually achieved it!) so in common with a lot of folk I made up for it as best I could with VTF adjustment. The cartridge actually sounded fine and tracked well at both 1.53g and 1.58g. (Range 1.5-1.6)
In contrast to your experience (Egrady) everything happened strictly "by the numbers" for me.
I found that once the arm was levelled for VTF, the ideal mid-range setting of force for the Lyra Delos was perfect.
Whenever I change the VTA to suit a given weight of disc, I optimise for the best sound then find that, coincidentally, the bubble ends up bang in the centre. Nice when that happens.
My previous cart was the Music Maker III whose instructions specified that the cart face should be strictly perpendicular to the disc surface for best VTA. The arm I was using at the time, a Linn Ittok LVII, was not helpful for precision tuning of VTA (if you unlocked the arm pillar to make a super-fine adjustment there was no guarantee that you'd actually achieved it!) so in common with a lot of folk I made up for it as best I could with VTF adjustment. The cartridge actually sounded fine and tracked well at both 1.53g and 1.58g. (Range 1.5-1.6)