On my 38 both parts have washboard surfaces on one side. Those go together washboard to washboard. Put a small bolt or machine screw through the slot with a washer & nut. Adjust to where the vent is fully closed when the lever is in the closed position & tighten the nut.


Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.