I plateaued around 168 and did PT65 this Wednesday (six sections).
I finally break 170 (this is my 6th PT) and scored 174 (with a BR score 179)!!!!
Here is my breakdown:
-2 LR (BR -2; still haven't figured out "the domesticated animal problem")
-1 LG (BR -0; caught my mistake during PT but did not have enough time to change)
-6 RC (BR -2 still need to work on RC)
-0 LR (my best LR so far!!!! really excited!!)
Do trust yourself (I basically gave up the hope of getting a 170 before September) and the process (it usually took me 1.5 days to finish BR and listen to JY's explanations; i have to admit BR is a painful process) .
I also find using a clean copy to BR a much better method!