Bot just talks to repair guy over and over for hours?

i cannot fix the root cause of your problem, but i think i can help with some of the symptoms...

1. install Auditor addon for wow, which in the config will allow you to auto sell all grey items every time a vendor window is open. (also provides GREAT money tracking, and auto repair and guild repair) or some other addon that does this (there are several)

2. install mr. itemremover plugin for HB, found here in the plugins section, which will allow you to customize which items you want HB to sell, even if they happen to be on the protected list.

3. make sure you have a mail recipient set in your hb settings, so hb is able to mail greens and other things you dont want to sell.