Question about ignition lock/switch.

[Clawhammer]

My ignition lock/switch is giving me some trouble. I've looked at replacements and I've looked at the FSM but I'm confused. Is it one peice? Previous vehicles of mine were two seperate parts. The lock/switch (where you insert the key) can be jiggled around in the steering column with ease and moves a few mm on each side. Sometimes (actually a lot) when I try to start the car (90 hatch) I have to move the steering wheel around to get some tension off the lock before I can turn the key...and then when I do I must turn the switch as far as it can go before it engages the starter. That being said...would I be best to replace the whole thing? Or is ithis stuff adjustable? In my truck there were rods that went down the column I could adjust. If it's not adustable and it's just worn due to age and I need to replace it; do I just need the lock/switch assembly I've seen for like $150?

Any input would be greatly appreciated.

Ryan