Calling all Artscroll Machzor users

I need your help.

While davening on Rosh Hashana, we were saying the t'fillah that we say before Brich Shmei, which is right before torah reading. I think it starts off Ribbono Shel Olem, but I am not sure. Right before this t'filla we sing Hashem Hashem three times, and right after it we sing something else three times. SO I am going to assume you know which T'fillah I am talking about.

If you are using an Ashkenaz standard Rish Hashana machzor, both regular size and pocket size, if you look about halfway through the paragraph there are two lines that have a slightly smaller font, and then there is a small gap as well. It looks like the text is curved as well, but I have a feeling it is an optical illusion.

I am trying to figure out why the text is like that. I have a feeling that they made a mistake, and just printed up those two lines on a different piece of paper, and pasted it in to make the correction rather than actually correct the file. Remember, the first edition printed almost 20 years ago, and technology, especially for laying out a hebrew siddur, is nowhere near as advanced as it is today.

Our shul just bought all new Artscroll Machzorim, and so all the shul-supplied machzorim were printed recently, in the twentieth impression of the printing. Obviously, the mistake happened years ago. I went to people in shul who had their own Artscroll siddur, and went back as far as the ninth impression (I forget the year) and the smaller, curved text appears in that edition as well.

Does anyone have a really old siddur, or know what happened to those two lines?