Any proper mechanics have any hints or tips for this. I have a blanking grommet to seal the hole below, but there’s no obvious way of popping it in. All pro tips welcomed.
Definitely not me, overly keen tinkerer here, but I'd try a tiny dab of grease and the tip of your smallest flat head screwdriver or something to work it in around the edges?
Any proper mechanics have any hints or tips for this. I have a blanking grommet to seal the hole below, but there’s no obvious way of popping it in. All pro tips welcomed.