Tracking error or ??


I was listening to my Lyra Kleos last night and on one of the most dynamic records that i own ( and best sounding) an Analogue Production Sonny Rollins Way out West LP; I noticed on the second side, which is very dynamic and has some serious high frequency extension, that there seemed to be a little distortion (or over loading) that i suspect is coming from the cartridge. The Kleos is tracking at the recommended 1.8 grams and my arm is usually pretty immune to miss-tracking ( as it uses a liquid bearing). Anyone else experience the same kind of thing with the Lyra's? I wonder if a higher tracking weight might be the answer, even though Lyra recommends an exact 1.8 grams?? 
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I think the under biasing idea is the answer but check that the cantilever is still in line. I had a similar symptom after a year of heavy lockdown use and found the cantilever was off skewed towards the outside of the disc even when not playing, though this was only visible with the cartridge, an SPU Royal N, removed from the arm.
Nice to see a WT arm on a Linn by the way. I came close to buying a Versalex but it’s feet were a bit too close to the edge of my Fraim.
@yeti42   The Kleos has a cantilever that can easily be impacted by wrong A-S. I have to take a listen to the modification that I did to the A-S tonight, but what i added was a very small amount, as too much and the cantilever will skew. The WT arm is a good one, however, I think it is the weak link in my system. Problem is that the LP12 is very limited as to what arm will work and so far none of the choices are that great.
If the black is anything like the LTD it lacks a bit of fine adjustment for VTA and VTF but you might find it harder to replace than you expect. After hearing one my Aro sounded a bit metallic. Of the cartridges I’ve heard on the LTD the top Dynavector was magical, the XX2 rather ordinary, as was the Benz LP and I couldn’t get my Transfiguration Proteus to sing on it but an EMT JSD5 and an Audionote (UK) io1 both hit the spot. I’ve never heard a Lyra on one.

The audio origami unipivot is now sold as the Roksan Sara, I’ve not heard it but it looks very Aro like, the Tigerpaw Javalin is even closer but only a few were made before ill health ended production. 


@yeti42   Thanks. I agree the WTA is difficult to replace. I have listened to a number of tonearms on the LP12, including the original Aro, the Ekos SE-1, and a few SME's. None were clearly superior to the WTA in most areas, and a few just didn't sound right at all. The WTA 'Black' is like you describe, lacking in fine adjustment, but it is also a very forgiving arm and works quite well with my Lyra. The new Aro may be a contender, if it is sold separately? 
As an owner of a Well Tempered Vesalex with an LTD arm, I can attest to its tracking ability... at least with a Lyra Kleo or Kiseki PH cartidge. I would ignore the critics who like to point out "flaws" in a design and most likely have never even taken the time to listen to a WT arm. I guess it's just easier to do that.

The overloading that you are detecting might be due to your phono stage or you might need to increase the tracking force.