They did indeed switch to a track with not only a larger backbone, but also thicker wall tubing. THAT change was not made as part of the 1989-1990 reprofile, though. That change was made some years later, I believe for the 1995 season. I know it was before 1996; it may have been 1994. Anyway, they replaced the entire pretzel from one track segment beyond the first transition point to one track section before the second transition point. The result was more than a little disasterous, in that the transition into and out of the replaced segment was extremely rough, with a nasty lateral kick because something didn't work quite right. On the day after CoasterMania, Magnum closed for a week or two. Two additional track segments were replaced in order to fix the transitions into and out of the new pretzel. A part representative said at the time that the ride was going down so that they could fix those spots because of "excessive wheel wear." A friend commented that it was also causing a problem of
excessive *rider* wear!
--Dave Althoff, Jr.