How Do We Prep for the Tougher Adaptive Quant Section

Hi! I’m stuck at the 160-162 range with Quant (based on 2 real attempts and my paid PowerPreps). I tend to lose points in the second tougher section.
What could be a good resource to familiarize myself with advanced questions? I think I know my fundamentals well and have been using the quant toolkit strategies. Anything that could help me crack through the tougher section, please.