Hi folks, I joined because I love old bikes. I have an '81 Yamaha XS 650, an '84 Honda Goldwing Aspencade and a '76 CB 750. The CB is a project right now, but I did run across a Tracy cafe body for it. I have to do a little repair to the gas tank but my question refers to the location of the petcock. Mine is deadcenter of the bottom rear of the tank and hits the backbone just forward of the crossmember. Is this standard or do I have a racing fram variant? Any help would be greatly appreciated. If I can't make it work on my project, I'd like to sell it to someone on the forum.