Ye, you have to dremel, ream, re-iron, reglue, cut, slice here and there just to get everything to fit. Most ARFs are made in assembly lines in Asia, China mostly. When Henry Ford invented the assembly line, he made sure that different parts were made by different people (called specialization). Even a single piece is not made by one person, a guy (or gal) has to take a break sometime... so in comes the next shift. Perhaps one shift had a bad day and was amiss by a millimeter in setting the lathe machine, not according to specs. Then comes quality control. It's next to impossible to determine if all the pieces of the airplane laid before QC fit together, unless they try to assemble the ARF themselves. But then, they won't be selling ARFs now but RTFs. I agree, the hardware included are cheap that you end up replacing them and have a lot of junk on your hands. But some companies sell ARFs without the hardware so you pretty much can choose what you wish to bolt into your plane. That said, I still think ARFs save building time, even with modifications, by 90%. You get to spend more time flying rather than building. IMO.