What do you have for a dipstick and dipstick tube? The correct ones would let you know if its overfilled.
Have you ever had the valve cover, oil pan, timing cover or lifter side cover off.
Given the areas where you say that you have static leaks may actually be caused by a severely sludged up engine to the point that the drain holes are severely restricted, causing the pooled up oil to leak out through your seals rather than going through the drain holes after shutdown.
