After I saw Skips I did the same thing, but went one step further - I put a small hole at the bottom of the cavity and ran a tygon tube down the door frame to have it exit at the bottom of the door. I've had the plane sit outside a couple of times in the rain and no water got inside. I don't know if the drains worked or not, but they look like they should work. :-)
Gary Casey
N224SG
George,
I put the dams in my door hinge cutouts as well after getting soaked
every time I opened the door if there had been moisture or rain on it. They
work great. Photo attached.
Skip Slater
N540ES