I have a buddy that has one of these. Works very well and does not have any rocking. The locking bolt is only off by about a 1/3 of an inch, so the front of the sleeve does not sit too far outside the receiver.
https://www.amazon.com/Rage-Powerspo.../dp/B009NUY4PU
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Brian | 2023 Trek Domane SLR 7 AXS | 2023 Trek CheckPoint SL 7 AXS | 2016 Trek Emonda ALR | 2022 Trek FX Sport 5
you should learn to embrace change, and mock it's failings every step of the way.