Daniel that's so off center....I wonder how it could be THAT off center by accident? Could the builder have meant to drill it like that for some reason
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Kinda of my thought as well, maybe he was adjusting for other issue's.
No real reason why it needed to be like that, as there is plenty of built in adjustment along the valve linkage train. This is just reflective of the level of quality of this build I'm afraid. Actually worse is the hole you see on the left, which is wallowed out about 15-20% bigger that its bearing shaft requires, is also well off center, and in the opposite direction of the mating shaft hole (the middle one) which is well off center to the lower left. Oddly perhaps, both of these latter two holes are very nicely sized and centered at the other end of their respective bores, so that is obviously (maybe) where he started drilling from?!?! The off center condition of these bores at their mating interface results in the two boss faces being offset from each other, which in the long term would wear poorly, but in the short term makes for an offset that looks poorly.