I have them on my SRT and so does Never Enough. I went the route of just putting some adhesive felt on the outer portion of the metal ring fill the gap and make it fit snug. Suprisingly it worked and has kept on working so far for 2 months, no problems. It is a little ghetto and probably isnt the most permanent of solutions but it worked for me. I know Never Enough went the route of heating the metal ring and bending it outward but I wasnt too sure how I was gonna do that so I just went with my option. Whatever works for ya I guess but either way they're worth the little trouble to get them on, they look really unique and imo really cool when all is said and done. hope that helped enjoy.