Hello all, the steering lock on my 2012 Honda Unicorn has suddenly stopped locking the steering, only when locking with the handle turned to the left. Here's how it works: turn the steering to the left and lock it, the key moves normally. But, after taking the key out if I try to rotate the steering, it moves the full range of motion left and right. The motion is not unrestricted; it does feel tighter, like there is something that is trying to stop the steering, but unsuccessfully. The key slit also rotates on its axis slightly and comes in between the 'lock' and the 'off' position.

The problem does not happen if I lock with the steering rotated to the RIGHT side. Then I can lock it normally and it stays locked safely.

I am not sure why this has happened. However, one month before the problem started I got the bike service at a local mechanic, after having it parked for one full year during lockdown. While the mechanic was servicing, he had some dirty (used) engine oil and was using it to oil the footpegs, stand etc. Suddenly he got up and started squirting oil in the lock slit too. I tried stopping the idiot but it was too late, oil had already dripped down the keyhole. Could this be the reason why the lock has started to slip?

Is there a way to fix this without having to visit a mechanic? My city is currently in lockdown. Can putting something like detergent or de greaser(brake cleaner) in the lock help?