LOL, that's great, what difference does the color make anyhow!? I've only come across one bad review of a Taprite regulator and it was from some guy that stripped the plastic knob - perhaps the guy that you bought it from? Heh. Anyhow, the following comments basically told the poster he probably over tightened when shutting off the gas, and that's probably accurate. After the knob stops turning I don't try to "make it tighter"... I mean... the regulator also has a shutoff valve. But if they do strip after years of use or whatnot I have no qualm even paying a few dollars to have them send me a new knob, and I doubt they'd charge as shown here.It came with a stripped out adjustment knob. I emailed taprite about it and they apoligized that they could only send me a blue one and not a grey Knob. I accepted and they sent me the knob completely free.