Pressure Point Combinations

How many (and which ones) (of 15) combinations of Pressure Points have you tried out - and what were the effects? Which ones do you normally use? And why do you use them in this way?
I always use pp#2. The pressure in the three last fingers in the left hand is vital to me. And I alwayss use pp#1 and pp#3 to. PP#3 is a companion to pp#1 and also good error sensor. If PP#3 takes over the pressure from pp#1 I know I am in trouble. Most of the time I use pp#1 and pp#3 for driveloading in the late downstroke, but sometimes only for extencior action. I use these two for adding finesse in the short and long game.

I try to not use pp#4 much as a power souce as I don't beleve it has much power to offer and that it seems like trying to max it only ruins the synchronization of pivot and arms. PP#4 is mostly a sensor for me.
PP4 always essential. Even if it's not active, it is a monitor especially for alignment and ball position.
PP4 and PP2 I concentrate on when drag loading. I drag load my woods. If I'm playing well I try to add some drive unloading with PP1

For the irons I focus on PP4 and PP3. It's not a drag/drive loading motion. Rather I feel like I'm pushing/pulling the club.
I've spent all my focus on 1 and 3. Once I start back in the dungeon due to snow, I will try to focus more on other combinations.
Thanks for the thought.
4-2-3 all active, all dragging the Clubhead, all being Thrust by the Pivot.