use graphite and or try blowing it out with some compressed air. probably just a tumbler caught up
Yeah I haven't had much experience with motorcycle locks sticking although I can see it being straight up and down and water getting in after being washed and all. I do know we have a fleet of crown vics and have to spray wd in the locks about once a year because the keys wont go all the way in and turn the lock and it always works.
In my expierance water/moisture/weathering got into the mechanism and probaly Seized it in one piece just like my k5 1K was left outside for a year and ended up bending the key cus it wud only go halfway, i had to pry out switch from tank , i then took off both of the Cross screws after i relized that the lock/unlock Lever that moves was Rusted and conjoined in one piece to the base i new something was wrong cus of all the rust, after remiving those screws i saw the housing with the spring nd it was all jammed cus of the corrosion i them took off the second mechanism flat round cover and yup more corrison and water residue which was alot, after having the 3 pieces i poured a shitload of wd-40 and Brushed everything clean which included grinding all parts with water residue more wd-40 and put all together and Now turns like Butter
All the white in the pic is water residue and rust