Fork oil level GPz750

Hey gang, I am rebuilding my forks and adding Progressive springs and cartridge emulators. I'm a little confused. The guys at Race Tech said to run the oil level at 130mm from the top forks fully compressed. The problem is the air hole is located at 210mm from the top. My Haynes manual says the oil level should be measured with the forks fully extended. Which is it?
I suppose I could cover the air hole with my finger while I add and check the fork oil but I don't recall having to do this the last time I changed the fork seals.
TIA,
Jim

If the two spring's free length, diameter and spring wire diameter (unloaded laying on the floor) are the same as stock, I would go with the FS Manual.
However if the wire diameter of the springs, their length and coil diameter are different then stock, then you have use the spring's "manufacturers recommendation" because they will displace a different volume of fork oil when installed.

Thanks Mission. The springs are pretty close. The problem I have is the fluid runs out when I try to get the oil level at 130mm compressed. It runs out the air hole. I suppose I am supposed to plug the air hole with my finger while I fill it up and check the oil level. Just wanted confirmation. Like I said., I did this a few years ago but can't remember what I did.
It sucks I'm getting dumber and more forgetful as I age... That does not bode well.

I'd ask the folks at Race Tech for clarification.

You'd think there is a CC volume number to pour in with no springs installed so you can just assemble it.

My electronic copy of the factory service manual has the compressed measurement with springs removed at 168mm + - 4mm and the volume of oil at 255cc if dry and 240cc if just oil changed. Another chart shows the extended measurement with springs removed at 382mm + - 2mm. The latter is what I used to set mine up.
Note the cheap paper copy manual I bought online had the incorrect oil level showing on their chart, which caused me to have to do the job twice as the first time I had it overfilled.

Race Tech may recommend a different oil level, based on how the cartridge emulators and aftermarket springs act compared to the factory setup.

I used 250ml each side on mine, also wrapped the air holes temporarily with some pvc tape.

Thanks everyone. I ended up using the measurements provided by race tech and covering the hole with my finger while I filled and measured. It was a little bit of a PITA but it is all together.
Now if I can just solve the idle issue...