evening, on my 500/4 K1, I:
I re-built the carbs,
setting float height to 26 mm
replaced o-rings inside float bowl,
gas-air screw opened 1 turn +/- 1/4, acording to specs
engine starts, but runs rich, #1 carb blowing fuel. engine bogs down and dies as I open choke, comes back to life as I close the choke more and more.
hymodyne