rear engine after rain storm

[rmorris]

My plane is almost always outside in the weather. One thing I noticed as a pattern - after a really heavy rain storm, the rear engine is hard to start.

I thought it might be the engine...but I have a practically new engine now, and it still does the same thing....starts super easy most of the time, but if I go to the plane after a heavy rain event the rear engine takes literally minutes of cranking to get going.

this happen to anyone else?