[UNYboater]

After reading this project & several threads, I still have questions.
Here's my situation: '01 S & I don't believe I have the upgraded mechanism. Yesterday, my key was tough to get into the slot. When in, it turned & the car started but the spring didn't pull it back from 'Start' to 'Run' like it had before. Also, when shut off, I had to hold it all the way to the detent that allows the key to be removed (& the electronics to shut off). It's like the springs let loose & the detents are off.
Are the springs & detent mechanisms in the replaceable portion of the old mechanism (Part # 4A0-905-849-B-M56 on Pelican)? Or are they in the main mechanism meaning that I need to replace the whole thing?
Either way, it appears to me that I can reuse the existing tumbler & keys...correct?
Thanks!