John I noticed u are in Florida, what temps are cool?
When I first got my Pk ave at 75k miles, i also noticed the same sort of thing.
I did a tune up with iridium plugs, ngk wires, and it idled perfectly now.
When I went to Mobil 1 10w-30 synthetic there still was some valve train noise.
I then added a bottle of lubegard bio engine treatment, noises be gone..
LUBEGARD BIO-TECH Engine Oil Protectant
I generally let the car warm to 125F before driving off, and all is well now.
From time to time I use chevron techron concentrate fuel additive to keep valves clean as well.