Could be your steering rack bushes..Check them out and see how you go.
I think that whiteline have replacement units for them.

Jesse

when you did the cv joints did you put them in back the right way and tight??? pays to double check the basics before trying to figure out what it is

I had the CV joints checked at a reputable mechanic. He actually could have taken me for a ride and charged me to replace them because that's pretty much what I suggested might be required but instead he told me they were in really good condition and just needed a clean up. I'm going to run with the assumption that he put them back in the right way.

No change at all in the power steering fluid. Hasn't used a drop since I bought it (one year ago on the 23rd: great Christmas present!!) so unless there's a blockage somewhere, I think that can be ruled out too.

I really need to get in underneath and visually inspect all these things but I just haven't had time. This rain really doesn't help because I can only do it in my driveway with the garage door open and shielding me.

The p/s fluid's age would be more likely to cause issues. I always use auto trans fluid without any issues. Check the manual for the correct type and drain interval.

Hey Cardboared tube samurai did you end up finding out the problem with the clunking noise while turning as i have exactly the same problem on my Gen 3. Was it the power steering fluid?

Cardboard the clunking ended up being the ceter diff which i got replaced with a brand new genuin subaru diff which hurt the pocket $1308 for just the center diff a total of $1700 including labour not cheap.