Regards maxson:
Compliance for the LPM 320STR is given at 42 x 10-6 cm./dyne at 100 Hz. Suggested tracking from 0.8 to (IIRC) 1.7 VTF. You might take the lower figure with "a grain of salt", maybe several. Considering the eff. mass of your tonearms, you might want to experiment with downforce.
Hidden somewhere on the TTNeedles site is a complete brochure describing the LPM 3xx carts. There is a 25 page Acutex thread at Lenco Heaven, the Infinity Black Widow (4gm eff. mass for the original Al. arm tube, 3gm for the later carbon fiber arm) is frequently mentioned as complimenting these cartridges. Using a Technics EPA 250 wand (12gm eff. mass) mistracking with the LPM 320 is controlled at 1.5gm VTF.
More information is offered at Adelcom.net, links to both:
https://www.adelcom.net/AcutexCart1.htm
https://www.lencoheaven.net/forum/index.php?topic=6675.0
Peace,