Brother of the Benz, sixto
I use wing-nuts, seven in all, for all the holding points of the air-cleaner housing.
The two toward the cam cover, the one on the oppositr side screwed on horizontally, and it is worth messing with to have the housing tight, I do tighten it, and the four attop the housing.
The one at the crankcase venilator hose may be difficult to tighten, depending upon it's stop position.
A flat washer or two adjusts it's position.
You must install the hose after the wing-nut is tightened.
I purchased mine from Sears Hardware and they are cad plated.
Happy Trails Beep Beep from The Spiderman in Houston!!!