Repair Anovos Neutrino Wand

I used my Anovos proton pack over the weekend and it took some damage. The neutrino wand cover came off. When I originally built it Anovos didn’t supply any nut to firmly attach the cover. Since its fallen off, I thought I should upgrade it. What do you recommend using? I also need replacement screws. Anyone know what size/length I need? The resin also cracked a little, but I’m going to fix that with CA. But, I noticed I’m also missing the screw near the handle. Thank you!