Just bought a CR480, and I need help w/ a new TM flat slide

Hi all,

 

I just recently purchaced an old 83 CR480, and I'm stumped to find that folks are running the same size carb on a 250 that they are on a 480- a TM38. My problem is that the spigot size on my old factory Kiehn carb is a 62mm, but the only two spigot sizes on a TM 38 are 43 and 47mm. That's a pretty big difference. Maybe there's another flat slide carb to run for the CR480?

 

Any help, including what size jetting and needle placement is greatly apprecieated. I'm in Dallas, which is about sea level.

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