Yeah... I'm going to drill out the hole on the Hobbit's sleeve. The hole in the base of the rda is substantially larger... not sure why they made the sleeve hole so tiny.
Because most of these chinese factories dont even have any actual vapors around to test this stuff. Its funny -the country that produces the most gear doesnt actually use any of it. Just like any other boring production job, walk in, sheet says 1500 tubes for job xxxxxxx. They punch a barcode, machine dloads specs. Part matches spec, into a bin it goes and sent to assembly.
A lot of times they just make whats on the order sheet, it says put hole here so they do, if it doesnt say x mm noones going to stop and say hey this doesnt look right, most of the time they dont even know how the stuff they make actually works.
I worked in a state of the art milling shop once, you never once actually had to know what your doing or making. Scan code, load machine, daydream until quitting time, check tolerance once in a while lol
People dont realize the guy who cut the rings may never have even seen the rest of the atty and probably doesnt care anyways. We see the whole products and think this flaw that thread etc etc. Think about that, the person milling kayfun topcaps, may have never seen one screwed together