Welcome to the forums, congrats on converting to draft beer at home.
It sounds like you have several issues, the first one to address is the temperature of your beer, which is a little on the warm side, see if you can't push that liquid temperature down to 38 or 36 degrees.
The second is your pressure, as counterintuitive as it might sound, the warmer the beer in the keg is above 36-38, the MORE pressure you will need to apply in order avoid foamy beer, you have to counter the existing pressure in the beer, and avoid undercarbonation, for 40 deg, if you are drinking a lighter lager, I would set the regulator to 15 psi, and see how that works for you.
Also keep in mind that your changes may not take effect instantly, the system needs to balance, and the pint you pour immediately after adjusting something doesn't always tell you what your adjustment did, due to the beer in the line, varying temperature, etc...
Additionally, ensure that your lines are CLEAN, or better yet, replace them - if your lines are short, and if you can, order from MM one of the long brushes and some line cleaner, and go to town on your line, dirty beer lines can lead to foaming issues at least as often as any temperature or pressure issues.
Good luck!
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