I picked up a brass racer at a fest today, and can't figure out what keeps the magnets (in their brass sleeve) fixed in the housing? They want to slide forward and touch the paddle arms. HELP! Thanks John K5MO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.14.7/537 - Release Date: 11/17/2006