I would remove the entire door assembly. Clean all the sealant off the flange and sidewall.
Then use butyl tape on the flange, screw the door back in place, and then trim any tape sticking out with a plastic knife. At that point you shouldn't need anything else, but you could run a bead of silicone on the top and sides.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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