Let's go thru your questions one at a time:
Yes, I have a metal 3' ruler that I'm using in the video below.Have you used a profile template or 3’ ruler or ?? To see how the front to back looks?
Drivers side...It doesnt' appear to be high. It DOES appear to be a gradual crown from front to back as it should be.Is the spot you planished a high spot now, is it a gradual crown front to back as it should be?
The very center of the hood is now strong (no flexing when pushing) and (using the ruler) it appears to be the same gradual crown from front to back as the driver side (see video below)
The loose area (passenger side of hood) is slightly lower. It doesn't have as much crown as the center or drivers side does.Now check the loose area the same way.
Loose area (passenger side) is definately down a bit (lower than the driver side area)Now check across, left to right in various positions to see if that loose area is dropped any.
I havent planished the center at all. only the driver and passenger sides in about a 8 inch diameter area (each) where the carb fire would have occurred.More importantly, was the “center” planished too much that it’s pulling the low?
Take a look at the video below and tell me if I should be planishing in the center next...to spread the steel towards the passenger side (to tighten that up more)?