I did try that....except I started at the bottom.
I noticed the water coming in after I got to the top, so I replaced the weatherstripping across the top. Thought I had it solved. But no...
I think I didn't wait long enough to check for seepage before I got the top.
I guess thus is the right place to post?
When the rain + wind is right, I'm getting water seeping in under my garage side-door.
(see video & photos).
The weatherstripping seems to be all intact & I dont notice any wetness around the stripping. It appears to be just seeping in underneath the sill...