Lowered Shock Floating Piston Height

[humanoid]

Im changing out the oil in my 17' 300 shock for my first time.
Shock has been lowered 1"/7mm spacer.


Following the online sachs manual and reading some posts online, I am seeing that my piston should be 70mm from top at full bottoming(all good) and +9-11mm after installing seal head in place.
I measured about 20mm the piston had moved up. Too much .

The Sach manual says to raise the shaft until case guide stop is flush with top of body(pg 41), on my shock the spacer is above the case guide stop.
Do I want to use the spacer as the "case guide stop" reference point?

Im going to try it anyway to see if oil goes down to proper level but need to get more oil so thought I'd ask anyway.

[AllMotoPerformance]

Assemble the shock as you would normally. After everything is bled, place the shock in the vise so the compression adjuster is the highest point. Then loosen the adjuster assembly to expose the Oring. With the Oring exposed, you can push the piston to the depth desired(I recommend 8-10mm from topping out).

Once you get the piston height set. tighten the adjuster assembly and fill with nitrogen.