Down to the last few steps and I really didn't see this presented anywhere. I'm using a 4" PVC port 20.5" long for my AV-12 enclosure. I'm just trying to determine what is the best way to affix the port to the MDF baffle? My design is downfiring with the port venting to the bottom as well. There's Gorilla Glue, two-part epoxy, Titebond, Rubber Cement, all of which could work. But I was just trying to determine what is the most effective or proven way. but would Titebond II work? Thanks.