That's very impressive! Which prep test have you taken so far?(e.g., pt 52-71) If it were more earlier ones(pre-70), I'm positive that there is a lot of rooms for improvement.
Has anyone on here used just PTs 52-61 and 62-71 and scored above a 170? If so, what was your study plan and diagnostic? I'm just curious how many people actually do this. My only issue would be not exposing yourself to enough logic games....
One interesting approach I have heard is to take the PTs out of order. For example, 51, 61, 71, 52, 62, 72, etc, etc. That will give you exposure to the newer tests and their differences without burning through them.