Need help. I intend to insulate my garage soon. I know I will have to install vent chutes so that the soffits are not plugged. However, there is some chutes already installed. However, there is some space between the chute and the bottom of the ceiling jost joist...maybe 3 inches. My issue is do you think some of the blown in will slip under the chute and a go into the soffit region or do you think that its so thick that it will more or less plug that up...which is what I'm hoping? Hopefully this makes sense.