installed SS springs and pinion angle is at 0

Yes.
Using the actual floor as a reference can get confusing. But basically it is the difference between the driveshaft and the pinion shaft. I like to use the ones with a magnetic base. Getting a good surface to measure on the pinion or yoke can be a little difficult.

I was tired in my previous post. I should havej ust said add shims ander the spring pas to get the angle down to where you want it and make sure the trans-to-driveshaft angle stays right around the 1* you have.