LuDookie
ArboristSite Guru
I usually line the sealing surfaces of my air filters with grease no matter how good of a design they are. My Echo 370 and 680 have pretty bullet proof designs but they still get greased. Even the Husqy 395 does better with a little grease. Wish all brands and all models would go to the automotive style. Crappy air filter designs is the reasons I don’t own a lot of saws, including the impressive 59cc Echos.