No fair, I'm at work right now and can't go into great detail but I found that when I press the button with my finger on the edge while applying sideways force I get significantly better contact. Keeping the button bore clean also makes a big difference with the aluminum plate.
I just got done sanding the bottom of my spring which made a noticeable difference. For now, I'm not having to apply sideways force to achieve the same result.
Also in regards to spring pressure, a trick I learned with my smok natural to reduce the amount of pressure required to compress the spring, I just heated it up with a torch. Heat a little, test, heat a little more and test until you get your desired resistance. Heating the spring weakens it. Keep in mind reducing the pressure may also reduce continuity.
Back to work!