Finally got a chance to install it (Stage 1) after it sitting there for like half a year. Great feel! There is indeed noticeable vibration. But I kinda think it is cool. Anyway, hope it will subside after it breaks it.
I didn't use any mallet. But I lube it like crazy, and it did take great effort to slide it in. I first pushed it in with the stock bolt on. And half way through (when it was real heard to push further), I took the bolt and the stock washer out. It did ease the insertion after the stock bolt was out. I know this is obvious, but the online manual didn't mention the stock washer. Guess it may be helpful for people to know.
I didn't use any mallet. But I lube it like crazy, and it did take great effort to slide it in. I first pushed it in with the stock bolt on. And half way through (when it was real heard to push further), I took the bolt and the stock washer out. It did ease the insertion after the stock bolt was out. I know this is obvious, but the online manual didn't mention the stock washer. Guess it may be helpful for people to know.