yep, same, If i give Hogarth the parts, i cannot talk to him any further. I had only spoken to the tech, the purple mouth guy, and not yet the doctor. I also only sabotaged the radio station. But if i give him the parts and complete that quest, he just doesn't open any dialogue selection interface, he instead repeats the same phrases about how the parts will help. I want to complete both quests, the mechanical parts and the brainbenders quest. but it seems like i have to pick one or the other, and have the rest stuck in my quest queue permanently. very annoying if you want to try to complete all the quests.