## Assembly
1. Inspect and finish the cast shells. Check pilot bores, closure interfaces, openings and rim fit before bonding parts.
2. Bond black scrim at the perimeter, with its separate 0.05 mm film. Keep the 35 mm acoustic opening clear of adhesive.
3. Bond the cut woven mesh into the bezel rebate using the 0.09 mm edge bond allowance. Fully contain sharp cut edges. Bond the bezel into the shell using the 0.20 mm perimeter film.
4. Install the circular lens with its visible center at (0,2), 3 mm below the former center, using the inherited collector seat. Retain the original internal right-angle optical coupler and LED mount. Verify brightness and uniformity across the offset output before permanent bonding.
5. Bond the circular metal cap to its carrier. Install the inherited clamp, then check free return and travel. Install smooth PTT grip and unchanged volume carriers/caps.
6. Use the final 27 R2 electronics, pads, keepers and countersunk fasteners in their reviewed locations. The two LTE service frames lift separately. Fit four hidden rim pads to the front shell only and attach the flexible rim after rigid closure; no pad bridges the service seam. Check harness, USB, RF and acoustic performance with actual hardware.