On this unit, disc drawer 1 hangs and goes in sort of rough. (When it cam to me, it was jammed closed) I have swapped the drawers around, so I know it's not the drawer. I need ( I think) is what I would call a gear stack assy... it's on the left hand side of the mechanical assy and it's what moves the trays in and out of the unit. It has 6 gears at the top of the assy and one on the bottom that moves up or down to engaged the correct gear to move the corresponding tray. I looked on Tritronics website, and the service manual is no longer available... <sigh> Not sure even if this will fix the unit.... disc tray #1 hangs.... If ANYONE has had any experience with these units, please advise me. Customer needs the unit ASAP! (karaoke DJ) We've look at a few websites, one offers a "loading assy worm gear" but I can't see any wear on the one in the unit. I could really use a service manual showing the mechanical views and part list! or a swift kick in the right direction! Thanks.... Steve Rumel Quality Video Service Professional Service For You Audio and Video Equipment 7008 Long Point Houston, Texas 713-956-2400 ***************************************************************************** Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/