Hey Don,
Good to hear from you after all these years! Hope you’re doing well. I see you’ve ventured into the FWD world just like so many of us have felt the need to. (No more hub caps that you have to put in the dishwasher,)

I’ve delved into the ignition switch/tumbler cylinder/steering lock assembly on my 2003 V70. To get into the tumbler pins you have to perform minor surgery. But you really don’t need a locksmith - just the right YouTube video. That being said, if you can turn the key from position 0 to Position I then I don’t think you have a tumbler pin issue, but rather something awry in the locking mechanicals. Some people have had a problem with little pieces breaking inside and causing jamming. Removing the square access plate often allows the broken bit(s) to fall out and free-up the lock.

Just like the later RWDs, you have to drill out the two snap head bolts in order to remove the lock assembly.

(My problem was a worn tumbler pin problem that caused the key to jam, worse in hotter weather when everything expanded.)