hi im just in the middle of fitting my new acctuator

bascially ive gone from a t2 to a t3 with -31 actuator all i need to know is when screwing the bit that fits on the rod and goes to the nipple of the exhaust housing does it matter how far its screwed on?

also does the exhaust flange bit that connects to the actuator does this have to be open or closed as in to the left or right ill get some pics sorted for tommorow cheers