I have a carriage Assembly Unit that is out on my HP Designjet L25500 and i need to have it replaced. I also have a printhead going bad on my HP Flatbed 700 that needs to be replaced. HP is asking crazy amounts of money to come out and service these machines because of travel expenses. Is there anyone in the Kansas City area that works on these machines? I need someone credible, i don't want just anyone working on them. But i also want to avoid HP if possible. Advice?