The bent needle was probably from someone tightening the main jet and atomiser when needle wasn't aligned. Well spotted.
The choke valves are stamped L and R so the only risk is installing them 180degrees out. The photos here should clarify
(I've just read: " it's not a choke - it just acts like one. It's an enricher")
Some other thoughts:
Take some time cleaning the passageways. I've used plastic thread from a strimmer or fishing line with carb cleaner.
Are the needles in the right slots? (Though this caters for wider throttle fuelling.)
Check float height. I find it useful to check fuel depth in floats bowls are equal.
I spent a lot of time hunting a carb problem which turned out to be a sticky timing advance so I'm inclined to say check electrics and earths too.
My R100 needs almost full choke to start but then settles on half choke.
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