Tilted Picture on a CRT PC Monitor?

Yeah, so I got an old CRT monitor awhile ago, and, well, the picture is very annoyingly tilted 3 degrees counter-clockwise. It happened because it was stored next to some magnets and that caused the yoke to move or something. It has a control panel where you can adjust the rotation, but for some reason it doesn't work. Values 0 and 100 look exactly the same. Anyways, I'll get to the question - Is there any software or anything I can do to fix it without opening it up and adjusting the yoke myself? Anything to adjust the display 3 degrees or something? Google is no help, by the way. I already tried. I couldn't find it in any forums, either. I mean, I'm not stupid; I know where to look first. Yeah, so if you're wondering, I know what I'm doing. I work at a computer shop, but, to be honest, 30,000V DC doesn't sound too appealing. Yep. There's a sticker on the back that says "Warning! 30 Kilovolts DC!" I thought it was lying, but according to Google that's how much you need to fire a electron beam 2 feet. And this repair needs to be done with the screen on and showing a grid to get it perfect, so... Yay electricity.