Installing lump ports in my head. I finished removing and smoothing the old boss areas top and bottom and the lumps fit pretty nicely, however there is still a slight ridge/gap right at the short turn where the lump sits on the head. the lump is flush with the head every where I can see. I have read the threads on epoxy to finish, wondering if it's necessary. tlowe doesn't mention it in his video, so I am guessing it will work fine the way it is. Looking for other peoples experiences.