We have a beloved older 16 ft
Scamp and have put up with the door gaps , but recently we found a product that is working well for us. We have replaced the door gasket with the new version but still had some small gaps. The product we found at our nearby Ace Hardware is “MD Expandable Foam WeatherSeal”I am happy to report that so far it is doing the job and all door gaps are gone. We have our fingers crossed that it will continue to do the job.