From what I've seen so far, most of them do this blueing, even with all the stock settings on the jets, etc. And yeah it starts turning gold first then blue.

And, if you want to clean it up, this stuff Blue Job really does work. But its only half an ounce for like $15 w/ shipping unless you can find it locally.

I swear by Blue-Job. I have the Jardine, and those who have it know how bad it will blue --brand new & 4 hours later its blue - what a p.o.s. - but it sure does sound good. Anyway, blue-job not only takes off the blue, but will actually prevent it from coming back as quickly. You do receive a small amount for 12 to 15 bucks, but you dont need much at all, and I mean a VERY little amount to restore a pipe. You have to put some elbow grease into it, but it will definitely work.