Howdy by the title you can guess I need help. Let me pitch you my issues. I'm building a cr500af. Nearly done. I've hit a road block though. I have a mikuni carb - what model, I don't know. I bought it brand new from a friend. was supposed to be for a cr125 or 250. First thing I am missing is the small bronze colored piece that screws into the cap, so I don't know where/what model to buy that. Second thing, I bought a throttle cable from motosport.com. I can't recall whether I purchased the cable for a crf250r, which is the frame im using, or a cr500. Inside the package was 2 cables. All 4 ends of the cables were the large barrels, like the part that goes into the throttle housing on the bars, not the small piece that goes into the carb. As you're reading this, it probably sounds all jumbled and confusing, but im just so frustrated and its hard to explain over the internet the issues im having with this part of the bike. someone just please tell me how to do this the right way; which cable to buy and where to get parts for the carb. I can post a picture of the carb if that will help identify it.