New Guy: "Guys, need some help here. My new build sucks, probably because I'm building it out of things I found in dumpsters behind gun stores. Despite the fact that my IQ is a negative number, I suspect my gas tube is too long, right?"
Us: Yes, gas tube is too long. Building off a mixed bag of parts rather than researching your choices is probably why what you have doesn't work, but good new is it's fixable.
New Guy: "WTF DO YOU MEAN, 'DOESN'T WORK'? YOU CALLING MY FAILED POS BUILD A POS IS OFFENSIVE!!!"
OK, well, good luck with that buddy. Have fun!