Hi Gadge,
It was a puzzle to have a screw-down vee-pulley AND a key...means it has to line up once every 360 degrees of turn.
I will blast it with Inox and, later, throw some heat on it.
Will also chase a pulley remover...
I am considering replacing the bearings - it may save grief further down the mowing path..
I will keep you in the loop - success or not!
CYA
Tim