To the uninitiated it's a scary thing, adjusting CRTs, but once you get past that it's pretty easy I recently enjoyed fixing up a 14" 15khz CRT housed in a cocktail arcade cabinet, the glue holding the yoke and rings had either perished or been moved in transit, took a lot of work but finally got it as good as I could get it. Happy that a CRT still lives instead of an LCD put in its place.