Setting up a Rig with a Tap delay that starts in absolute milliseconds.

Here is a scenario I could use some help with:

I build a rig with a tap delay, get the tap tempo speed where I want, and adjust the note ratios.
This rig and delay speed is all set, and I save it.
Now I "disable tempo" in the rig menu for the above rig, and save again, the idea being that when loading the rig, it defaults to the delay speed saved in step one, and isn't subject to tap tempo until I gauge tap tempo.

However, when I "disable tempo", the rig changes the delay speeds to something random, i can't figure out what.

Thanks Gents!

thanks for the tips. i can't find where to disable global tempo.

also, for those with experience on beat scanner, what are some cool ways to automate it into a band performance? can a take an input from a drummer's microphone into the tap input? let the beat scanner always refresh itself to the rig?