So it took 65g to actuate? I figured they'd actuate way below 67g and be ~67g at full compression like how my results turned out with 50g/55g springs. Also, did you use red/black stems or clears to test?
PS - ABS double shots weigh 1.2g and Imsto Thick PBT caps weigh 1.3g.
I used my Clears, not Reds. They actually started having noticeable compression at around 40g and appeared to hit the bump at around 50-55g. Just to overcome the bump and spring, they had to have 65g on them. I tried with a Red I have, but couldn't tell when I hit the point of actuation. I saw it compressing, but couldn't tell when I compressed enough to actuate. They did seem to bottom out somewhere around 65-75g on the Red though.
And I didn't use double shots or a PBT, I used this sucker since it's nice and flat:
![](http://i.imgur.com/PBKnqms.jpg)
I'm guessing it's about a gram, maybe a little less.