seriously someone must have done it before. .I feel embarrassed asking but I have to figure it out..it must be fairly obvious? ? if anyone could take a picture of there's even better
On my 2002 (I don't know if it's similar to the 2007) there is a gusset between the vertical spar and the lower cradle. The top end of the spring simply hung on the air gap on the gusset. Take a picture of the RH foot peg and post it up. I'll see if I can ID the spot that I am talking about.
Notting there... ill have another look later..I want to avoid welding if possible. .anyhow I don't have a welder, I could get a lend of one but my welding wouldn't be great..
The 07 frame didn't have the tab in the picture Jakobi posted. They just used a small hole in the frame to locate the spring. I forget exactly where it is, as I lost that return spring and never bothered to replace it, so can't help except for letting you know there never was a tab there.
Noobs is right.My old one (05) hooked in behind some frame webbing.The spring evenualy rusted there and broke.I never replaced it and still works fine today afaik.