On YouTube on the VPI channel, Harry did a minor rant ("Chat with Mat & Harry EP-2-4-6-21") complaining about cartridges that glue their styli onto the cantilever as opposed to drilling a hole and inserting the stylus, ensuring that the stylus is at a 90 degree angle to the cantilever. According to him, cheap/expensive cartridge, doesn't matter - they're usually always slightly askew forward/backwards/sideways by some amount if they're glued. Kinda funny since they make a big deal about laying that rod in the slot on top of their head shells for setup. The Analog Planet procedure will get you there kinda, as you might find the values bounce around a little so you have to make a judgement call; he also suggests building a DIY box (see link above). Probably easier is the Fozgometer but they're hard to get at this point in time, and there's times where the meter bottoms/tops out and is less useful. I've seen mention of using an oscilloscope (and again, Analog Planet alludes to this way) but you have to learn to read/operate one if you don't know how - might be easy, don't know.