CV carbs for Triumph and Norton

I have fitted these 40mm CV carbs to 3 bikes, 2 x 850 Nortons and 1 x Triumph stroker twin 850cc. I intend to fit one to a Trident 850cc and at least 2 other Nortons I have. I find with a bit of fettling they work extremely well and the bikes have good acceleration. With the jetting shown there is no over rich 8 stroking or lean hesitation at steady throttle. I don't have proper air cleaners yet, although the other carb I fitted to my brothers 850 chopper does. Nice flat design and would fit in the room available but @ $150 I'm in no hurry, so some fine screen works for now.