You need to remove the gear lever surround etc.. and access the top of the gearbox...... the difflock lever mechanism will be siezed.....when i did mine, i removed it and did it in a vice, gently tapping it one way and the other...... and wd-ing it at the same time... be careful, as the ally casting isn't that beefy..... and the steel shaft is whats stuck...... enjoy...