Right Engine Still Feathers and shuts down.

Once again the right engine feathered and shut down after landing. It only
happenes when the engine is hot. If we just make a lap around the field and
land everythings fine. We took it up for 20 min and landed and the right side
did it again. I just got the props back from the prop shop the 2nd time to get
looked over. I also sent both governors out and was told the right engine
governor was beyand repair, so I got an overhauled one . We have no Idea what
is going on. The main bearings hold 42 psi and the cylinders are 80/80 and the
engine has 40 hour since OH. The right side oil temp and pressure are higher
then the left side and the cylinder head temps are the same. After landing the
Oil pressure on both engines goes to about 20-30 psi and the right side oil
temp is a little higher then the left . Any Ideas ?