Yep. Familiar story - dimples seem all wrong. As a result, my All Season (from the initial batch) can barely manage most 33s on 700c (currently running Challenge Grifo 33 rear). 42? No chance at all.
Same on my batch one isen. The center of the dimple is at the rim tyre interface for a 700c wheel. I guess it is positioned more to give clearance for 650b?
In fairness to isen, the spec for the first gen was 35mm in 700c. Challenge tyres tend to come out a bit wider and with nobbles “33mm” is prob about 35.
It almost looks like the dimple for the tyre clearance is approx where the rim is rather than where it should be for the tyre...