All that I'm saying is that rolling cigars is never a precise process. It uses an agricultural product.
Industrial gadgets force a cigar to be a specific, repeatable ring size, whether or not the bound bulk is exactly right. That's why, with few exceptions, nearly every box of premium cigars that I have purchased over a period of more than 40 years contained at least 1, sometimes 2 cigars with poor draw. A carefully made, fully hand-rolled cigar will be an approximate size, perfectly suited for the density and thickness of the (always differing) filler leaf strips that are selected. Even the most closely controlled batches of cigar leaf differ from leaf to leaf. Your fingers can tell the difference; an industrial gadget cannot. But that's the price (or rather the cost of business) for having to sell cigars in identical appearing batches. The most conscientious factories stick a suction gauge into the head of every bound cigar bulk, and discard (remove the binder and send the filler back for re-use) those that fail.
As a home roller, you don't need to settle for that. Cigars are just about the only hand-crafted items I know of which are regularly judged not by their artisanal quality, but by their resemblance to a mass-produced, industrial commodity.
Bob