What models do you own ? This is application-specific to the 241,261,362 (and 462 although it looks like it wood need a larger diameter adapter) ... I’ve used Vaseline , axel grease, bearing grease etc on the stock filter on these models and STIHL fines get in after extended run - time ! The plastic components of the “twist lock” wear over time and the seal is compromised, this is the issue for guys that do a lot of cutting !!! you can replace the whole she-bang and buy yourself some time but it’s STIHL plastic ! Machined metal trumps plastic every time sir - also you are now using a hose clamp to secure the filter onto the adapter instead of relying on a “twist lock “ seal ... Which is the superior design ? I’ll let the viewer decide for him/her self - also by removing the “baffle” you are getting superior throttle response and power gains as now the engine can flow more air !