I am currently in the process of overhauling a TBI unit for my '93 Chevy. It is gummed up rather badly. I have tried using throttle body cleaner and a tooth brush to clean it, but I am not satisfied with the results. Anyone have an idea or method that will work better? I plan on having the injectors cleaned and tested as well. I was wondering if the main body could be given a "bath"? Thanks.