These are Noleen NR-1 shocks on an old Girvin ProFlex MTB. How do I get a grip on the preload adjuster? There is very little surface area & there are no notches for a typical spanner & a pipe wrench, vice grips, etc. which are sure to mar the springs if I can even get them in there to grip it. The working space on the fork shock is especially tight.

Got the answer on ******. I just grip the spring by hand and turn it which turns the collar. I have the shock manual. It would have been nice if they included that tip.