Hello guys!
Im having trouble starting my 123 200D by the key ignition switch.
A couple of days ago, i would turn the key and it wouldn't crank (but the idiot lights still work). What I would do is to just repeat the key stroke/cycle once or twice and then it would fire up immediately.
Unfortunately, this morning the trick wont work!

No matter how many times I turn the key, nothing happens! What I did to start the car was to use a small screwdriver to reach the starter then fire it up manually by connecting the two 'bolts/screws' wherein the battery leads are directly connected. It would then crank and fire up with no hesitation. Obviously, I have a problem with the key switch.
So, is there an easy way to fix this? What part should I clean/replace so that it will work again? I was thinking (since I have to be on the go always) of putting a heavy duty push-button switch directly connected to the starter in order to go around this problem, but then I want to fix the key switch nevertheless. Is this an easy DIYer?
Thanks a bunch!
And oh, the battery is new (and is confirmed to be in shape) and the starter was just rebuilt.