TZW.........A used trailer can be a very hard find! It took me a year to find one for my 2001 3000SCR... Check www.greatlakesskipper.com
or just goggle doulbe axle trailer and see what comes up... Look on E-Bay....
Try Clymer or Seloc for your manuals. These are not service manuals but do have alot of info and are not as expensive either.