yeah the oval is the hardest, but also the sexiest looking when meshed. If done properly, it will hold up. Even with ELKY's heavy duty mesh the gap between the front and back of the oval is like 1/16th of an inch. Take your time and do it right and it will hold. Been on for 6 months, and is holding up nicely. Bottom grilles are "easier" but the front lower is a pain in the butt. You can use the stock clips, but when you put em back on squash em a bit with some pliers so they grab better. Be careful not to break them. Screws are a good substitute in the event that does happen.
