Finally got both front speakers installed! The harshness is definitely out and I agree now you can listen to it longer. When you put your ears by the tweeters you could barely hear it. I guess the crossover really limiting what’s going there. Disclaimer: I’m 52 and the high frequencies are lost on my ears.
I ended up with a setting of about ¾ for both treble and bass.
Snapping back the door handle trimming: Hook the bottom first but mind the two thin tabs just above it. Make sure the two are align before pushing them in. I bent one and a good thing I was able to correct.
Has anyone done any deadening on the plastic panels? Especially those cubby holes at the bottom. So plasticky. A thin layer would most likely improve that. Need to trace that back well though.
Thanks to everyone for their reco and tips.