I completely agree with Larryi. My Helikon is very sensitive to VTA and I run it with the arm parallel to the record surface using a 180 gram pressing. Also, I feel that it is sensitive to VTF and I run it at the top end of the range at 1.75 grams, no more, no less; after trying it below this in 0.25 gram increments, at least in my rig, this the best VTF.
Lyra Helikon setup sensitivity?
I've been playing around with different protractors while waiting for my MintLP protractor to get here and I have to say I don't really hear a difference between them all. The only thing the Helikon seems sensitive to is tracking force. If it's too low, it definitely distorts. Otherwise it all sounds good. Have others found that the Helikon works well with multiple geometries?