IMHO, those aren't bad numbers for hot oil. Some people would like to see a little more idle pressure, but 15 to 17 hot is not bad. Certainly not worth a tear down unless there is something else amiss. I would run it.
Now if you can't sleep at night over it, how about a high volume pump or heavier oil? I wouldn't make either change based on what you have given us, but they are possibilities.
Yea I was thinking going to 20-50 and some Lucas. The motor runs good and nothing is knocking or tapping. I kinda wondered what a factory pump psi idled at and then go from there.
