1984 944 Ignition Key and Lock

Vehicle Information: Model(924/944): 944; Year: 1984; Engine (type, size, modifications): stock; Total Mileage: 106,000;

My ignition key sometimes won't turn in the lock. Once it turns and I leave the key in the lock, it turns every time. It's only when I remove the key and re-insert it sometimes it won't turn. Do you think I can remove the lock and fix it? Do I have to remove the steering wheel to remove the lock?