Vibration right off idle

Ok, so I got new biscuit rubber mounts and the motor is sitting level side to side and so is the trans.

I wanted to get your guys opinion on where to measure for pinion angle? For the transmission, I've measured on the pan rail and the end of the tail shaft and I get two different angles. Same goes for the pinon, I measured on the bottom flat, and also the flat of the yoke. Once again two different angles.

If I go by the trans tail shaft I get DOWN 2.5* and the flat bottom of the pinion is DOWN 3.9* I used the Tremec App and it will only go green if the pinion is at a max of 3* DOWN.

What I don't understand, is all I read is that the pinon needs to be parallel with the trans under load. To be parallel wouldn't the pinon need to be at 2.5* Up under load?
Then only place to measure the tranny angle is the tail shaft. Likewise the only place is the pinion yoke for the rearend.
You are correct the trans must be tipped up (positive), rearend tipped down (negative).
I set mine so they are as close to same angel (-/+) so the tranny and the rearend are parallel.
Sounds like you have a bum transmissiom mount.
I had to shim both to get it correct.