thats it chops you've got it...just let some pressure out via the grub screw, but do it very slowly,you let to much out and you'll be in need of a recharge.
-slam it
-raise it to ride height(
make sure you are on smooth)
-let a little pressure out of acc... the car will start to drop... dont let it drop to far no more than inch
-tighten grub screw
-take for a spin see how it feels
when i did them on blue one of the rams stuck, so i was waiting for the arch to stop dropping and nothing happened,let more pressure out and still nothing... let more out,the ram unstuck its self and dropped about 15cm and i was left with no suspension on that corner and had to go for a recharge

... take your time and don't do all four in one go do the frts and then backs.