If the tab dosen't show , is it possible to melt some stainless steel screen into the plastic to reinforce the fix?
The best screen can come kitchen department.. The stainless splatter screen they (wives,girlfriends) use to cover the hot oil when cooking is a fine mesh that can be melted in and as it is drill able and won't rust stain etc, those hand strainer thingys are good for tougher projects but both need to be replaced asap or they'll yell..
Anyway a common solder gun can push it into the hot plastic as you heat it cut to fit in place.
hope to have helped