Usin the small with the hose slightly over the lg.Were you using the small barb, or was the hose actually one the larger barb? That filter is made to work on two different size hoses. if it's for the larger one, you can just cut off the pinched part.
Ahh, that's cool, but how's the scrap thing for the exhaust ?that strap is for the exhaust and the threaded thing is a tool to remove all the gears.