If the key is badly worn I always thought that the barrel insides are also the same -- and sort of match each other so when you get a new key cut it has nice and sharp edges and so may not work. Or is that just stupid.
but it might be worth spending 5 or 6 quid on a new key before splashing out.
Yep,,, battery terminals lips and girlfriends
No , spare unworn key is worse. Time for some Vaseline to shove down the hole.
I always found that if the key didn't turn easily, if I then either pushed the key towards the font of the bike, or pulled it back towards me, it then turned easily.
Eventually if your barrels go to the same as the one on my old XS, you will be able to turn the ignition on and remove the key with the engine running.Like I said above, Yamaha Ignitions
I did Vaseline regularly my TDM,