One thing I noticed, a big difference in clones -- I have several tobeco KFL+'s, and one EH Pro -- the EHPro's chimney is a good bit taller; if you try to use a tobeco chimney top in an ehpro, it won't seal the top cap at all. My EHPro is gold, but the inner parts are just stainless, so I always keep my EHpro fully assembled so the parts don't interchange with tobeco parts.
Andria
Andria