How to adjust the ride height of coilovers?

[s13 drifter]

Just wondering lads how do i adjust the ride height of the 180sx?Its fitted with these gab coilovers.Is it just a matter of winding up the two locking collars??Iv already cracked one of the lower collars trying to get them loose and i cannot get the top ones loose even after a can of WD-40!Also do i need to compress the spring as i dont have anyway of doing this so i was trying without?Heres a pic

[Scamper]

Ya need to turn the two locking rings opposite ways to loosen them, then wind up or down the top one a tighten them together again,
You dont need to compress the spring.

Ill be round sat evening, i can call out with them bulbs and do it for ya.

[s13 drifter]

Ya need to turn the two locking rings opposite ways to loosen them, then wind up or down the top one a tighten them together again,
You dont need to compress the spring.

Ill be round sat evening, i can call out with them bulbs and do it for ya.

Ya give a shout out shur.

Iv the lower collars loose but i actually cannot get the top ones loose thats why i was thinking if i had the spring compressed it might take some pressure off the collar and it might be handier to loosen

[Newsome]

Taking the slack off the spring will make very litle difference. Youll need a big blow torch and reden the whore.