Ohlins springs and sag...

[HansJ]

...from the point that I can't freely revolve the light spring under the allen screw head.
...

which is what the instructions say, but what i find difficult to decide, it can differ quite a bit.

[dandywarhol]

I like your rule analogy dfh simpler than cutting a pen spring in half!

Careful cutting with an angle grinder will give you the flat edge you need Hans - if you're not confident - would like to send them to me, I'd be happy to try them in mine