Did I mess up the preload on my Meisterr coilovers?

Hey folks,

Installed some new Meisterr Sport-Z coilovers on my NC over the past couple of days. I fear I’ve messed things up a bit, need some advice!

The fronts I got on easily and decided not to touch the adjustments at all for now.

However, in the process of installing the rears, I started to research how to adjust ride height, noticing that the rear coilovers were set much higher ‘stock’ than the fronts.

Stupidly I didn’t look hard enough for Meisterr specific instructions, instead using a few YouTube guides, in particular this one: https://youtu.be/IMMcA0IPv9o?si=QJJSwKwHr0UwZpzO

Which lead me to loosening the lower collar, then adjusting the top and middle collars in order to adjust the heights (in the directions noted in the video). I did this on both sides to get them lower and as close as possible.

BUT - I’ve since finally dug out a Meisterr instruction manual online that suggests I shouldn’t have messed with the top two collars at all, instead… um… twisting the actual damper body, maybe by hand?

It seems I may have messed with the preload rather than just the ride height, but honestly I’m still unsure…

Any help would be appreciated. In terms of function, seems these new Sport-Zs are basically the same as the ZetaCRDs everyone seems to have.

Here’s the Meisterr instructions page for reference:

I read somewhere that the std preload on the spring should be 2mm.
IE - from the point where the top collar touches the spring at full shock extension - it should be turned to compress the spring another 2mm.

If you have undone the top collar to lower the car - I would guess the spring will now be loose when the wheels are off the floor. ( This would be an MOT fail )