I have noticed quite a bit of slop and clunking in the rear axle at low speeds and this might be a good time to swap the ring and pinion for a lower ratio. At a few of the tracks/hills that I run regularly I am getting into 5th gear near the end of the front straights. I'm considering a drop to 3:55 or 3:31 but don't know if they are going to be enough to keep me out of 5th. I also don't want to kill my acceleration out of the slower sections as the 3:73 works well with the MT-82 ratios. Can anyone comment on their experiences? I also plan on dropping in a T2R at the same time.