weatherstripping

Here I am enjoying our first long term outing on the UP camped along Lake Superior!
Did have a problem with the seals around the doors leaking a bit. I have trim around the outside and inside of the doors. The weatherstripping I used did not completely fill the gap (which is 3/8's of an inch) but did press up against the inside trim. Any suggestions? anyone ever use the stuff the use on cars? Seems a bit thicker and may work better for me. I'll try to include a pic of the door assembly.

Did have a problem with the seals around the doors leaking a bit. I have trim around the outside and inside of the doors. The weatherstripping I used did not completely fill the gap (which is 3/8's of an inch) but did press up against the inside trim. Any suggestions? anyone ever use the stuff the use on cars? Seems a bit thicker and may work better for me. I'll try to include a pic of the door assembly.