X308 Cam cover part load breather plate

Hi Guys, I have removed the L/H cam cover and found the plate holding the breather gauze has come unstuck from it. Question is what glue do I use to secure it back onto the cover?. Has anybody had the same problem?. Also the grooves that the spark plug gasket sits in has a couple of broken edges. I seem to remember a member had repaired his maybe with JB Weld. but I cannot find the post. Any help would be appreciated. Thanks.