Recently bought the Grayguns X5 competition parts package. Any recommendations on instruction videos on the disassembly and reassembly of the FCU?

Thank you very much. Those videos should do it. Worst case I can send the bag full of parts to Grayguns and tell them my grandson or neighbor took the FCU apart to clean it.

my pleasure. Bruce Gray and the team are fantastic to work with. hope you enjoy the kit.