Drill out and remove this plug to acces the Air mixture screw

I really like my DRZ400S, but I can't leave anything stock for long. Here are some photos of the modifications I have made so far. This is a work in progress as I come across new parts that I feel will make the bike better I will add them. As you can see, some of the things I changed, I have changed again as I found better parts. My bikes are never finished, I take the opportunity to improve them whenever I can. Life is good