Kevin, I have exactly the same situation as you described. (Dipstick rising slightly, breathers on both valve covers with slight
oil mist on the drivers side). The dipstick raises when I exercise the engine....WOT or sustained cruising at 3000 rpm). I don't have any
oil consumption issues and the plugs look great. To address the situation I just wound a rubber band around the top of the dipstick and placed the other end around one of the bolts holding the water pump to the block. Not a small rubber band but a big one that the postal service uses to bundle all of my wife's catalogues together when they deliver the mail! It works fine but I think I will adopt the suggestion of one of the other posters and upgrade my crude solution to less inelegant solution of a worm clamp and a spring.
