Hi there. I have a similar post on here, asking pretty much the same thing but I feel that I didn't describe what I was looking for very well on the title/header & maybe won't get the response Im looking for.
I am desperately looking to find anybody that could help me get hands on a handbook or a copy of a handbook for an Avondale Dart 510-5 2000 model.
Have you contacted Avondale, they might be able to help. I also read on another forum that information on all models of a particular year is in the same handbook so if you know anyone with a 2000 Avondale they might be able to help though I can't confirm this as I've never had an Avondale.
If you're really desperate I would get both the 1999 and the 2001 handbooks from Magnum that you sourced earlier. I wouldn't have thought there would be too much difference in the equipment of your 2000 version. Any improvements over the 1999 should be covered by the 2001 one. Just a suggestion !