Today, I finally got around to drop off my car for 30,000 miles, or so called Level D service. One of the reason I sped this process up was because I started to experience strange behaviors on first gear. It's quite common for Subaru manual gear box that first gear is not smooth. But after my Stage 2 reflash, it became fine. For some reason lately, first gear became very "unfriendly", car jerks, stalls etc, it's quite noticeable. Someone recommended that I change gear box fluid. Well I figured why not just go ahead and do this 30,000 service.
After this service, the "unfriendly" behavior is gone, so I am quite happy, I guess my buddy was right.
As for bad news they noticed bad rear sway bar end-links. They suggest new links, because OEM links were too weak for aftermarket swaybar, and thus they are probably trashed. Also they said that power steering fluid is dark, they recommend flushing.