I have the 90x on an OriginLive Incognito Arm on a SOTA Nova V vacuum tt and also have it set at about 1.9 gm. This seems just about right for me. The dealer I bought the 90x from suggested 1.8 - 1.9 setting. I have my VTA set with slight negative rake toward the arm pivot. Using both the Hi-Fi News Analog Test LP and the Cardas Frequency Sweep and Burn-in Record I have found the 90x to be a little finicky (spelling?)with the 90x passing all but the most abusive test the test lps have to offer at the 1.9 setting. I'm still experimenting.