Enlarging PRP doesn't always help

There have been discussions of SSR work in/on various magazine articles/forums thru the years.

And I’ve seen where some are having luck with the approach to the turn having a more rounded shape(as opposed to flatter).
I can’t think of a single time where I’ve lowered the center of the floor as it approaches the turn, to create some of that “rounding” of the floor, and had it end up as a flow gain.
It’s never worked for me.

I’m not saying I haven’t lowered the floor, I’m saying I haven’t purposely lowered the center of the floor, more than the sides, in an effort to create a rounder approach to the SSR.
On 906/915 heads, I lower the floor at the SSR a fair amount……..and I do it mostly by feel, with confirmation that it’s good from the bench.