It's very important to use Dielectric grease on all your connections. Even pull all your fuses and make sure there is no corrosion. 2 Sets of coils sounds crazy to me. Sounds like they're trying to save money by trying these other shotgun fixes. Something else is happening. CDI boxes are notoriuos for being intermitent. They can't check it cold. The bike needs to be hot for the the CDI to start acting up.
