I run Solex PHHs on my 2000CS. They idle beautifully and no particular issues. I like that you can easily set the float level from the outside of the carb, for fine-tuning.
Here’s the ‘67, 2000CS at idle…right around 950rpm
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I run Solex DDHs on my ‘71, 2002. Those have the jets on the top, like a Weber, but still have the throttle shafts with no bushings. I slap some axle grease on the shafts to help seal the slight vacuum leak. I run a sock style filter and they roar, nicely.
Ed Z