right i need help with setting my actuator on my car,

basically i had my car set up bout 4 months ago n everythings been sweet (cheers stu) but the other week i noticed i was 2 psi down on boost
n last week i dropped another psi, so after a couple of checks i have come 2 the conclusion that the spring has gone weak in my actuator,

long story short ive just orderd a collins actuator,how do i go bout setting it up?

i realise it will b a process of doing test on the road but do i extend the rod 2 increase or decrease boot?


and can i measure the rod on the old actuator 2 get a rough idea of how long the rod needs 2 be?

cheers jay