Class C Window Leak

[EdU]

A side window on my Class C leaks during very heavy rains.  Water can be seen tricking down the inside wall from the metal frame during heavy rain.  I'm wondering if it is possible for an old or worn felt insert, that the window glass slides in, to be causing the leak?  Has anyone else experienced this problem?  If so, it seems like an easy fix.  Thanks for comments 

 

[CheeseHead]

Your windows should have exterior drain holes and they sometimes become clogged. This may be your problem  causing the water to come in instead of draining out the holes?

 

[EdU]

Your windows should have exterior drain holes and they sometimes become clogged. This may be your problem? causing the water to come in instead of draining out the holes?

Thanks CheeseHead I'll check it out.