I have no idea what Double D 40 is, but it sounds like the title of a movie I would watch 15 minutes at a time.
If I can get the freewheel apart, I'll dismantle it, soak it overnight in ATF, and then repack the bearings and pawls with Boat trailer grease. Boat trailer grease can help bearings to survive even if they get water in them.
If I can't dismantle it, I'll pretend it's a ninja star and see if I can make it stick in the fence. If it sticks, it has a use and I'll leave it there as a reminder of my awesomness. If I can't make it stick, then it a useless ninja star, and it goes in the trash. My time is worth more than the replacement cost of those things, so there's no point in putting it back on a bike. Rebuildable replacements can be had for less than $3.